8261890

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1297}}^1$

素因数の和:1331

約数の個数: 48

約数和(自身を含む): 18644472

約数和(自身を除く): 10382582

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 49, 65, 70, 91, 98, 130, 182, 245, 455, 490, 637, 910, 1274, 1297, 2594, 3185, 6370, 6485, 9079, 12970, 16861, 18158, 33722, 45395, 63553, 84305, 90790, 118027, 127106, 168610, 236054, 317765, 590135, 635530, 826189, 1180270, 1652378, 4130945, 8261890]

約数ペア:

[(1, 8261890), (2, 4130945), (5, 1652378), (7, 1180270), (10, 826189), (13, 635530), (14, 590135), (26, 317765), (35, 236054), (49, 168610), (65, 127106), (70, 118027), (91, 90790), (98, 84305), (130, 63553), (182, 45395), (245, 33722), (455, 18158), (490, 16861), (637, 12970), (910, 9079), (1274, 6485), (1297, 6370), (2594, 3185)]