81245216

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{541}}^1$

素因数の和:602

約数の個数: 72

約数和(自身を含む): 182134764

約数和(自身を除く): 100889548

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 76, 104, 152, 208, 247, 304, 361, 416, 494, 541, 608, 722, 988, 1082, 1444, 1976, 2164, 2888, 3952, 4328, 4693, 5776, 7033, 7904, 8656, 9386, 10279, 11552, 14066, 17312, 18772, 20558, 28132, 37544, 41116, 56264, 75088, 82232, 112528, 133627, 150176, 164464, 195301, 225056, 267254, 328928, 390602, 534508, 781204, 1069016, 1562408, 2138032, 2538913, 3124816, 4276064, 5077826, 6249632, 10155652, 20311304, 40622608, 81245216]

約数ペア:

[(1, 81245216), (2, 40622608), (4, 20311304), (8, 10155652), (13, 6249632), (16, 5077826), (19, 4276064), (26, 3124816), (32, 2538913), (38, 2138032), (52, 1562408), (76, 1069016), (104, 781204), (152, 534508), (208, 390602), (247, 328928), (304, 267254), (361, 225056), (416, 195301), (494, 164464), (541, 150176), (608, 133627), (722, 112528), (988, 82232), (1082, 75088), (1444, 56264), (1976, 41116), (2164, 37544), (2888, 28132), (3952, 20558), (4328, 18772), (4693, 17312), (5776, 14066), (7033, 11552), (7904, 10279), (8656, 9386)]