521554540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{64709}}^1$

素因数の和:64762

約数の個数: 48

約数和(自身を含む): 1217583360

約数和(自身を除く): 696028820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 4030, 8060, 64709, 129418, 258836, 323545, 647090, 841217, 1294180, 1682434, 2005979, 3364868, 4011958, 4206085, 8023916, 8412170, 10029895, 16824340, 20059790, 26077727, 40119580, 52155454, 104310908, 130388635, 260777270, 521554540]

約数ペア:

[(1, 521554540), (2, 260777270), (4, 130388635), (5, 104310908), (10, 52155454), (13, 40119580), (20, 26077727), (26, 20059790), (31, 16824340), (52, 10029895), (62, 8412170), (65, 8023916), (124, 4206085), (130, 4011958), (155, 3364868), (260, 2005979), (310, 1682434), (403, 1294180), (620, 841217), (806, 647090), (1612, 323545), (2015, 258836), (4030, 129418), (8060, 64709)]