261660640

素因数分解:

$2^5\times 5^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1\times {\mathrm{163}}^1$

素因数の和:384

約数の個数: 96

約数和(自身を含む): 634798080

約数和(自身を除く): 373137440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 79, 80, 127, 158, 160, 163, 254, 316, 326, 395, 508, 632, 635, 652, 790, 815, 1016, 1264, 1270, 1304, 1580, 1630, 2032, 2528, 2540, 2608, 3160, 3260, 4064, 5080, 5216, 6320, 6520, 10033, 10160, 12640, 12877, 13040, 20066, 20320, 20701, 25754, 26080, 40132, 41402, 50165, 51508, 64385, 80264, 82804, 100330, 103016, 103505, 128770, 160528, 165608, 200660, 206032, 207010, 257540, 321056, 331216, 401320, 412064, 414020, 515080, 662432, 802640, 828040, 1030160, 1605280, 1635379, 1656080, 2060320, 3270758, 3312160, 6541516, 8176895, 13083032, 16353790, 26166064, 32707580, 52332128, 65415160, 130830320, 261660640]

約数ペア:

[(1, 261660640), (2, 130830320), (4, 65415160), (5, 52332128), (8, 32707580), (10, 26166064), (16, 16353790), (20, 13083032), (32, 8176895), (40, 6541516), (79, 3312160), (80, 3270758), (127, 2060320), (158, 1656080), (160, 1635379), (163, 1605280), (254, 1030160), (316, 828040), (326, 802640), (395, 662432), (508, 515080), (632, 414020), (635, 412064), (652, 401320), (790, 331216), (815, 321056), (1016, 257540), (1264, 207010), (1270, 206032), (1304, 200660), (1580, 165608), (1630, 160528), (2032, 128770), (2528, 103505), (2540, 103016), (2608, 100330), (3160, 82804), (3260, 80264), (4064, 64385), (5080, 51508), (5216, 50165), (6320, 41402), (6520, 40132), (10033, 26080), (10160, 25754), (12640, 20701), (12877, 20320), (13040, 20066)]