20120180

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{59}}^2$

素因数の和:161

約数の個数: 54

約数和(自身を含む): 45657654

約数和(自身を除く): 25537474

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 59, 68, 85, 118, 170, 236, 289, 295, 340, 578, 590, 1003, 1156, 1180, 1445, 2006, 2890, 3481, 4012, 5015, 5780, 6962, 10030, 13924, 17051, 17405, 20060, 34102, 34810, 59177, 68204, 69620, 85255, 118354, 170510, 236708, 295885, 341020, 591770, 1006009, 1183540, 2012018, 4024036, 5030045, 10060090, 20120180]

約数ペア:

[(1, 20120180), (2, 10060090), (4, 5030045), (5, 4024036), (10, 2012018), (17, 1183540), (20, 1006009), (34, 591770), (59, 341020), (68, 295885), (85, 236708), (118, 170510), (170, 118354), (236, 85255), (289, 69620), (295, 68204), (340, 59177), (578, 34810), (590, 34102), (1003, 20060), (1156, 17405), (1180, 17051), (1445, 13924), (2006, 10030), (2890, 6962), (3481, 5780), (4012, 5015)]