21991968

素因数分解:

$2^5\times 3^2\times {\mathrm{19}}^1\times {\mathrm{4019}}^1$

素因数の和:4054

約数の個数: 72

約数和(自身を含む): 65847600

約数和(自身を除く): 43855632

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 19, 24, 32, 36, 38, 48, 57, 72, 76, 96, 114, 144, 152, 171, 228, 288, 304, 342, 456, 608, 684, 912, 1368, 1824, 2736, 4019, 5472, 8038, 12057, 16076, 24114, 32152, 36171, 48228, 64304, 72342, 76361, 96456, 128608, 144684, 152722, 192912, 229083, 289368, 305444, 385824, 458166, 578736, 610888, 687249, 916332, 1157472, 1221776, 1374498, 1832664, 2443552, 2748996, 3665328, 5497992, 7330656, 10995984, 21991968]

約数ペア:

[(1, 21991968), (2, 10995984), (3, 7330656), (4, 5497992), (6, 3665328), (8, 2748996), (9, 2443552), (12, 1832664), (16, 1374498), (18, 1221776), (19, 1157472), (24, 916332), (32, 687249), (36, 610888), (38, 578736), (48, 458166), (57, 385824), (72, 305444), (76, 289368), (96, 229083), (114, 192912), (144, 152722), (152, 144684), (171, 128608), (228, 96456), (288, 76361), (304, 72342), (342, 64304), (456, 48228), (608, 36171), (684, 32152), (912, 24114), (1368, 16076), (1824, 12057), (2736, 8038), (4019, 5472)]