81291705

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{397}}^1$

素因数の和:506

約数の個数: 64

約数和(自身を含む): 152679168

約数和(自身を除く): 71387463

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 73, 85, 165, 187, 219, 255, 365, 397, 561, 803, 935, 1095, 1191, 1241, 1985, 2409, 2805, 3723, 4015, 4367, 5955, 6205, 6749, 12045, 13101, 13651, 18615, 20247, 21835, 28981, 33745, 40953, 65505, 68255, 74239, 86943, 101235, 144905, 204765, 222717, 318791, 371195, 434715, 492677, 956373, 1113585, 1478031, 1593955, 2463385, 4781865, 5419447, 7390155, 16258341, 27097235, 81291705]

約数ペア:

[(1, 81291705), (3, 27097235), (5, 16258341), (11, 7390155), (15, 5419447), (17, 4781865), (33, 2463385), (51, 1593955), (55, 1478031), (73, 1113585), (85, 956373), (165, 492677), (187, 434715), (219, 371195), (255, 318791), (365, 222717), (397, 204765), (561, 144905), (803, 101235), (935, 86943), (1095, 74239), (1191, 68255), (1241, 65505), (1985, 40953), (2409, 33745), (2805, 28981), (3723, 21835), (4015, 20247), (4367, 18615), (5955, 13651), (6205, 13101), (6749, 12045)]