128921940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{311}}^1$

素因数の和:387

約数の個数: 216

約数和(自身を含む): 466083072

約数和(自身を除く): 337161132

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 47, 49, 60, 63, 70, 84, 90, 94, 98, 105, 126, 140, 141, 147, 180, 188, 196, 210, 235, 245, 252, 282, 294, 311, 315, 329, 420, 423, 441, 470, 490, 564, 588, 622, 630, 658, 705, 735, 846, 882, 933, 940, 980, 987, 1244, 1260, 1316, 1410, 1470, 1555, 1645, 1692, 1764, 1866, 1974, 2115, 2177, 2205, 2303, 2799, 2820, 2940, 2961, 3110, 3290, 3732, 3948, 4230, 4354, 4410, 4606, 4665, 4935, 5598, 5922, 6220, 6531, 6580, 6909, 8460, 8708, 8820, 9212, 9330, 9870, 10885, 11196, 11515, 11844, 13062, 13818, 13995, 14617, 14805, 15239, 18660, 19593, 19740, 20727, 21770, 23030, 26124, 27636, 27990, 29234, 29610, 30478, 32655, 34545, 39186, 41454, 43540, 43851, 45717, 46060, 55980, 58468, 59220, 60956, 65310, 69090, 73085, 76195, 78372, 82908, 87702, 91434, 97965, 102319, 103635, 130620, 131553, 137151, 138180, 146170, 152390, 175404, 182868, 195930, 204638, 207270, 219255, 228585, 263106, 274302, 292340, 304780, 306957, 391860, 409276, 414540, 438510, 457170, 511595, 526212, 548604, 613914, 657765, 685755, 716233, 877020, 914340, 920871, 1023190, 1227828, 1315530, 1371510, 1432466, 1534785, 1841742, 2046380, 2148699, 2631060, 2743020, 2864932, 3069570, 3581165, 3683484, 4297398, 4604355, 6139140, 6446097, 7162330, 8594796, 9208710, 10743495, 12892194, 14324660, 18417420, 21486990, 25784388, 32230485, 42973980, 64460970, 128921940]

約数ペア:

[(1, 128921940), (2, 64460970), (3, 42973980), (4, 32230485), (5, 25784388), (6, 21486990), (7, 18417420), (9, 14324660), (10, 12892194), (12, 10743495), (14, 9208710), (15, 8594796), (18, 7162330), (20, 6446097), (21, 6139140), (28, 4604355), (30, 4297398), (35, 3683484), (36, 3581165), (42, 3069570), (45, 2864932), (47, 2743020), (49, 2631060), (60, 2148699), (63, 2046380), (70, 1841742), (84, 1534785), (90, 1432466), (94, 1371510), (98, 1315530), (105, 1227828), (126, 1023190), (140, 920871), (141, 914340), (147, 877020), (180, 716233), (188, 685755), (196, 657765), (210, 613914), (235, 548604), (245, 526212), (252, 511595), (282, 457170), (294, 438510), (311, 414540), (315, 409276), (329, 391860), (420, 306957), (423, 304780), (441, 292340), (470, 274302), (490, 263106), (564, 228585), (588, 219255), (622, 207270), (630, 204638), (658, 195930), (705, 182868), (735, 175404), (846, 152390), (882, 146170), (933, 138180), (940, 137151), (980, 131553), (987, 130620), (1244, 103635), (1260, 102319), (1316, 97965), (1410, 91434), (1470, 87702), (1555, 82908), (1645, 78372), (1692, 76195), (1764, 73085), (1866, 69090), (1974, 65310), (2115, 60956), (2177, 59220), (2205, 58468), (2303, 55980), (2799, 46060), (2820, 45717), (2940, 43851), (2961, 43540), (3110, 41454), (3290, 39186), (3732, 34545), (3948, 32655), (4230, 30478), (4354, 29610), (4410, 29234), (4606, 27990), (4665, 27636), (4935, 26124), (5598, 23030), (5922, 21770), (6220, 20727), (6531, 19740), (6580, 19593), (6909, 18660), (8460, 15239), (8708, 14805), (8820, 14617), (9212, 13995), (9330, 13818), (9870, 13062), (10885, 11844), (11196, 11515)]