256155640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^2\times {\mathrm{223}}^1$

素因数の和:341

約数の個数: 96

約数和(自身を含む): 637015680

約数和(自身を除く): 380860040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 47, 52, 65, 94, 104, 130, 188, 223, 235, 260, 376, 446, 470, 520, 611, 892, 940, 1115, 1222, 1784, 1880, 2209, 2230, 2444, 2899, 3055, 4418, 4460, 4888, 5798, 6110, 8836, 8920, 10481, 11045, 11596, 12220, 14495, 17672, 20962, 22090, 23192, 24440, 28717, 28990, 41924, 44180, 52405, 57434, 57980, 83848, 88360, 104810, 114868, 115960, 136253, 143585, 209620, 229736, 272506, 287170, 419240, 492607, 545012, 574340, 681265, 985214, 1090024, 1148680, 1362530, 1970428, 2463035, 2725060, 3940856, 4926070, 5450120, 6403891, 9852140, 12807782, 19704280, 25615564, 32019455, 51231128, 64038910, 128077820, 256155640]

約数ペア:

[(1, 256155640), (2, 128077820), (4, 64038910), (5, 51231128), (8, 32019455), (10, 25615564), (13, 19704280), (20, 12807782), (26, 9852140), (40, 6403891), (47, 5450120), (52, 4926070), (65, 3940856), (94, 2725060), (104, 2463035), (130, 1970428), (188, 1362530), (223, 1148680), (235, 1090024), (260, 985214), (376, 681265), (446, 574340), (470, 545012), (520, 492607), (611, 419240), (892, 287170), (940, 272506), (1115, 229736), (1222, 209620), (1784, 143585), (1880, 136253), (2209, 115960), (2230, 114868), (2444, 104810), (2899, 88360), (3055, 83848), (4418, 57980), (4460, 57434), (4888, 52405), (5798, 44180), (6110, 41924), (8836, 28990), (8920, 28717), (10481, 24440), (11045, 23192), (11596, 22090), (12220, 20962), (14495, 17672)]