21590460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{107}}^1$

素因数の和:200

約数の個数: 144

約数和(自身を含む): 70761600

約数和(自身を除く): 49171140

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 59, 60, 76, 90, 95, 107, 114, 118, 171, 177, 180, 190, 214, 228, 236, 285, 295, 321, 342, 354, 380, 428, 531, 535, 570, 590, 642, 684, 708, 855, 885, 963, 1062, 1070, 1121, 1140, 1180, 1284, 1605, 1710, 1770, 1926, 2033, 2124, 2140, 2242, 2655, 3210, 3363, 3420, 3540, 3852, 4066, 4484, 4815, 5310, 5605, 6099, 6313, 6420, 6726, 8132, 9630, 10089, 10165, 10620, 11210, 12198, 12626, 13452, 16815, 18297, 18939, 19260, 20178, 20330, 22420, 24396, 25252, 30495, 31565, 33630, 36594, 37878, 40356, 40660, 50445, 56817, 60990, 63130, 67260, 73188, 75756, 91485, 94695, 100890, 113634, 119947, 121980, 126260, 182970, 189390, 201780, 227268, 239894, 284085, 359841, 365940, 378780, 479788, 568170, 599735, 719682, 1079523, 1136340, 1199470, 1439364, 1799205, 2159046, 2398940, 3598410, 4318092, 5397615, 7196820, 10795230, 21590460]

約数ペア:

[(1, 21590460), (2, 10795230), (3, 7196820), (4, 5397615), (5, 4318092), (6, 3598410), (9, 2398940), (10, 2159046), (12, 1799205), (15, 1439364), (18, 1199470), (19, 1136340), (20, 1079523), (30, 719682), (36, 599735), (38, 568170), (45, 479788), (57, 378780), (59, 365940), (60, 359841), (76, 284085), (90, 239894), (95, 227268), (107, 201780), (114, 189390), (118, 182970), (171, 126260), (177, 121980), (180, 119947), (190, 113634), (214, 100890), (228, 94695), (236, 91485), (285, 75756), (295, 73188), (321, 67260), (342, 63130), (354, 60990), (380, 56817), (428, 50445), (531, 40660), (535, 40356), (570, 37878), (590, 36594), (642, 33630), (684, 31565), (708, 30495), (855, 25252), (885, 24396), (963, 22420), (1062, 20330), (1070, 20178), (1121, 19260), (1140, 18939), (1180, 18297), (1284, 16815), (1605, 13452), (1710, 12626), (1770, 12198), (1926, 11210), (2033, 10620), (2124, 10165), (2140, 10089), (2242, 9630), (2655, 8132), (3210, 6726), (3363, 6420), (3420, 6313), (3540, 6099), (3852, 5605), (4066, 5310), (4484, 4815)]