81290456

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:300

約数の個数: 64

約数和(自身を含む): 169646400

約数和(自身を除く): 88355944

約数列:

[1, 2, 4, 8, 13, 26, 52, 71, 101, 104, 109, 142, 202, 218, 284, 404, 436, 568, 808, 872, 923, 1313, 1417, 1846, 2626, 2834, 3692, 5252, 5668, 7171, 7384, 7739, 10504, 11009, 11336, 14342, 15478, 22018, 28684, 30956, 44036, 57368, 61912, 88072, 93223, 100607, 143117, 186446, 201214, 286234, 372892, 402428, 572468, 745784, 781639, 804856, 1144936, 1563278, 3126556, 6253112, 10161307, 20322614, 40645228, 81290456]

約数ペア:

[(1, 81290456), (2, 40645228), (4, 20322614), (8, 10161307), (13, 6253112), (26, 3126556), (52, 1563278), (71, 1144936), (101, 804856), (104, 781639), (109, 745784), (142, 572468), (202, 402428), (218, 372892), (284, 286234), (404, 201214), (436, 186446), (568, 143117), (808, 100607), (872, 93223), (923, 88072), (1313, 61912), (1417, 57368), (1846, 44036), (2626, 30956), (2834, 28684), (3692, 22018), (5252, 15478), (5668, 14342), (7171, 11336), (7384, 11009), (7739, 10504)]