172389915

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1\times {\mathrm{647}}^1$

素因数の和:880

約数の個数: 48

約数和(自身を含む): 310542336

約数和(自身を除く): 138152421

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 191, 279, 465, 573, 647, 955, 1395, 1719, 1941, 2865, 3235, 5823, 5921, 8595, 9705, 17763, 20057, 29115, 29605, 53289, 60171, 88815, 100285, 123577, 180513, 266445, 300855, 370731, 617885, 902565, 1112193, 1853655, 3830887, 5560965, 11492661, 19154435, 34477983, 57463305, 172389915]

約数ペア:

[(1, 172389915), (3, 57463305), (5, 34477983), (9, 19154435), (15, 11492661), (31, 5560965), (45, 3830887), (93, 1853655), (155, 1112193), (191, 902565), (279, 617885), (465, 370731), (573, 300855), (647, 266445), (955, 180513), (1395, 123577), (1719, 100285), (1941, 88815), (2865, 60171), (3235, 53289), (5823, 29605), (5921, 29115), (8595, 20057), (9705, 17763)]