85787780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{1493}}^1$

素因数の和:1545

約数の個数: 72

約数和(自身を含む): 206691912

約数和(自身を除く): 120904132

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 169, 170, 221, 260, 338, 340, 442, 676, 845, 884, 1105, 1493, 1690, 2210, 2873, 2986, 3380, 4420, 5746, 5972, 7465, 11492, 14365, 14930, 19409, 25381, 28730, 29860, 38818, 50762, 57460, 77636, 97045, 101524, 126905, 194090, 252317, 253810, 329953, 388180, 504634, 507620, 659906, 1009268, 1261585, 1319812, 1649765, 2523170, 3299530, 4289389, 5046340, 6599060, 8578778, 17157556, 21446945, 42893890, 85787780]

約数ペア:

[(1, 85787780), (2, 42893890), (4, 21446945), (5, 17157556), (10, 8578778), (13, 6599060), (17, 5046340), (20, 4289389), (26, 3299530), (34, 2523170), (52, 1649765), (65, 1319812), (68, 1261585), (85, 1009268), (130, 659906), (169, 507620), (170, 504634), (221, 388180), (260, 329953), (338, 253810), (340, 252317), (442, 194090), (676, 126905), (845, 101524), (884, 97045), (1105, 77636), (1493, 57460), (1690, 50762), (2210, 38818), (2873, 29860), (2986, 28730), (3380, 25381), (4420, 19409), (5746, 14930), (5972, 14365), (7465, 11492)]