261641240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{701}}^1$

素因数の和:793

約数の個数: 128

約数和(自身を含む): 711659520

約数和(自身を除く): 450018280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 43, 56, 62, 70, 86, 124, 140, 155, 172, 215, 217, 248, 280, 301, 310, 344, 430, 434, 602, 620, 701, 860, 868, 1085, 1204, 1240, 1333, 1402, 1505, 1720, 1736, 2170, 2408, 2666, 2804, 3010, 3505, 4340, 4907, 5332, 5608, 6020, 6665, 7010, 8680, 9331, 9814, 10664, 12040, 13330, 14020, 18662, 19628, 21731, 24535, 26660, 28040, 30143, 37324, 39256, 43462, 46655, 49070, 53320, 60286, 74648, 86924, 93310, 98140, 108655, 120572, 150715, 152117, 173848, 186620, 196280, 211001, 217310, 241144, 301430, 304234, 373240, 422002, 434620, 602860, 608468, 760585, 844004, 869240, 934433, 1055005, 1205720, 1216936, 1521170, 1688008, 1868866, 2110010, 3042340, 3737732, 4220020, 4672165, 6084680, 6541031, 7475464, 8440040, 9344330, 13082062, 18688660, 26164124, 32705155, 37377320, 52328248, 65410310, 130820620, 261641240]

約数ペア:

[(1, 261641240), (2, 130820620), (4, 65410310), (5, 52328248), (7, 37377320), (8, 32705155), (10, 26164124), (14, 18688660), (20, 13082062), (28, 9344330), (31, 8440040), (35, 7475464), (40, 6541031), (43, 6084680), (56, 4672165), (62, 4220020), (70, 3737732), (86, 3042340), (124, 2110010), (140, 1868866), (155, 1688008), (172, 1521170), (215, 1216936), (217, 1205720), (248, 1055005), (280, 934433), (301, 869240), (310, 844004), (344, 760585), (430, 608468), (434, 602860), (602, 434620), (620, 422002), (701, 373240), (860, 304234), (868, 301430), (1085, 241144), (1204, 217310), (1240, 211001), (1333, 196280), (1402, 186620), (1505, 173848), (1720, 152117), (1736, 150715), (2170, 120572), (2408, 108655), (2666, 98140), (2804, 93310), (3010, 86924), (3505, 74648), (4340, 60286), (4907, 53320), (5332, 49070), (5608, 46655), (6020, 43462), (6665, 39256), (7010, 37324), (8680, 30143), (9331, 28040), (9814, 26660), (10664, 24535), (12040, 21731), (13330, 19628), (14020, 18662)]