261722240

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{379}}^1$

素因数の和:494

約数の個数: 128

約数和(自身を含む): 683726400

約数和(自身を除く): 422004160

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 83, 104, 128, 130, 160, 166, 208, 260, 320, 332, 379, 415, 416, 520, 640, 664, 758, 830, 832, 1040, 1079, 1328, 1516, 1660, 1664, 1895, 2080, 2158, 2656, 3032, 3320, 3790, 4160, 4316, 4927, 5312, 5395, 6064, 6640, 7580, 8320, 8632, 9854, 10624, 10790, 12128, 13280, 15160, 17264, 19708, 21580, 24256, 24635, 26560, 30320, 31457, 34528, 39416, 43160, 48512, 49270, 53120, 60640, 62914, 69056, 78832, 86320, 98540, 121280, 125828, 138112, 157285, 157664, 172640, 197080, 242560, 251656, 314570, 315328, 345280, 394160, 408941, 503312, 629140, 630656, 690560, 788320, 817882, 1006624, 1258280, 1576640, 1635764, 2013248, 2044705, 2516560, 3153280, 3271528, 4026496, 4089410, 5033120, 6543056, 8178820, 10066240, 13086112, 16357640, 20132480, 26172224, 32715280, 52344448, 65430560, 130861120, 261722240]

約数ペア:

[(1, 261722240), (2, 130861120), (4, 65430560), (5, 52344448), (8, 32715280), (10, 26172224), (13, 20132480), (16, 16357640), (20, 13086112), (26, 10066240), (32, 8178820), (40, 6543056), (52, 5033120), (64, 4089410), (65, 4026496), (80, 3271528), (83, 3153280), (104, 2516560), (128, 2044705), (130, 2013248), (160, 1635764), (166, 1576640), (208, 1258280), (260, 1006624), (320, 817882), (332, 788320), (379, 690560), (415, 630656), (416, 629140), (520, 503312), (640, 408941), (664, 394160), (758, 345280), (830, 315328), (832, 314570), (1040, 251656), (1079, 242560), (1328, 197080), (1516, 172640), (1660, 157664), (1664, 157285), (1895, 138112), (2080, 125828), (2158, 121280), (2656, 98540), (3032, 86320), (3320, 78832), (3790, 69056), (4160, 62914), (4316, 60640), (4927, 53120), (5312, 49270), (5395, 48512), (6064, 43160), (6640, 39416), (7580, 34528), (8320, 31457), (8632, 30320), (9854, 26560), (10624, 24635), (10790, 24256), (12128, 21580), (13280, 19708), (15160, 17264)]