80521180

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{13931}}^1$

素因数の和:13974

約数の個数: 36

約数和(自身を含む): 179639208

約数和(自身を除く): 99118028

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 289, 340, 578, 1156, 1445, 2890, 5780, 13931, 27862, 55724, 69655, 139310, 236827, 278620, 473654, 947308, 1184135, 2368270, 4026059, 4736540, 8052118, 16104236, 20130295, 40260590, 80521180]

約数ペア:

[(1, 80521180), (2, 40260590), (4, 20130295), (5, 16104236), (10, 8052118), (17, 4736540), (20, 4026059), (34, 2368270), (68, 1184135), (85, 947308), (170, 473654), (289, 278620), (340, 236827), (578, 139310), (1156, 69655), (1445, 55724), (2890, 27862), (5780, 13931)]