21385260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1$

素因数の和:97

約数の個数: 216

約数和(自身を含む): 75937680

約数和(自身を除く): 54552420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 19, 20, 26, 30, 36, 37, 38, 39, 45, 52, 57, 60, 65, 74, 76, 78, 90, 95, 111, 114, 117, 130, 148, 156, 169, 171, 180, 185, 190, 195, 222, 228, 234, 247, 260, 285, 333, 338, 342, 370, 380, 390, 444, 468, 481, 494, 507, 555, 570, 585, 666, 676, 684, 703, 740, 741, 780, 845, 855, 962, 988, 1014, 1110, 1140, 1170, 1235, 1332, 1406, 1443, 1482, 1521, 1665, 1690, 1710, 1924, 2028, 2109, 2220, 2223, 2340, 2405, 2470, 2535, 2812, 2886, 2964, 3042, 3211, 3330, 3380, 3420, 3515, 3705, 4218, 4329, 4446, 4810, 4940, 5070, 5772, 6084, 6253, 6327, 6422, 6660, 7030, 7215, 7410, 7605, 8436, 8658, 8892, 9139, 9620, 9633, 10140, 10545, 11115, 12506, 12654, 12844, 14060, 14430, 14820, 15210, 16055, 17316, 18278, 18759, 19266, 21090, 21645, 22230, 25012, 25308, 27417, 28860, 28899, 30420, 31265, 31635, 32110, 36556, 37518, 38532, 42180, 43290, 44460, 45695, 48165, 54834, 56277, 57798, 62530, 63270, 64220, 75036, 82251, 86580, 91390, 93795, 96330, 109668, 112554, 115596, 118807, 125060, 126540, 137085, 144495, 164502, 182780, 187590, 192660, 225108, 237614, 274170, 281385, 288990, 329004, 356421, 375180, 411255, 475228, 548340, 562770, 577980, 594035, 712842, 822510, 1069263, 1125540, 1188070, 1425684, 1645020, 1782105, 2138526, 2376140, 3564210, 4277052, 5346315, 7128420, 10692630, 21385260]

約数ペア:

[(1, 21385260), (2, 10692630), (3, 7128420), (4, 5346315), (5, 4277052), (6, 3564210), (9, 2376140), (10, 2138526), (12, 1782105), (13, 1645020), (15, 1425684), (18, 1188070), (19, 1125540), (20, 1069263), (26, 822510), (30, 712842), (36, 594035), (37, 577980), (38, 562770), (39, 548340), (45, 475228), (52, 411255), (57, 375180), (60, 356421), (65, 329004), (74, 288990), (76, 281385), (78, 274170), (90, 237614), (95, 225108), (111, 192660), (114, 187590), (117, 182780), (130, 164502), (148, 144495), (156, 137085), (169, 126540), (171, 125060), (180, 118807), (185, 115596), (190, 112554), (195, 109668), (222, 96330), (228, 93795), (234, 91390), (247, 86580), (260, 82251), (285, 75036), (333, 64220), (338, 63270), (342, 62530), (370, 57798), (380, 56277), (390, 54834), (444, 48165), (468, 45695), (481, 44460), (494, 43290), (507, 42180), (555, 38532), (570, 37518), (585, 36556), (666, 32110), (676, 31635), (684, 31265), (703, 30420), (740, 28899), (741, 28860), (780, 27417), (845, 25308), (855, 25012), (962, 22230), (988, 21645), (1014, 21090), (1110, 19266), (1140, 18759), (1170, 18278), (1235, 17316), (1332, 16055), (1406, 15210), (1443, 14820), (1482, 14430), (1521, 14060), (1665, 12844), (1690, 12654), (1710, 12506), (1924, 11115), (2028, 10545), (2109, 10140), (2220, 9633), (2223, 9620), (2340, 9139), (2405, 8892), (2470, 8658), (2535, 8436), (2812, 7605), (2886, 7410), (2964, 7215), (3042, 7030), (3211, 6660), (3330, 6422), (3380, 6327), (3420, 6253), (3515, 6084), (3705, 5772), (4218, 5070), (4329, 4940), (4446, 4810)]