12890800

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1$

素因数の和:135

約数の個数: 120

約数和(自身を含む): 34765136

約数和(自身を除く): 21874336

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 37, 40, 50, 52, 65, 67, 74, 80, 100, 104, 130, 134, 148, 185, 200, 208, 260, 268, 296, 325, 335, 370, 400, 481, 520, 536, 592, 650, 670, 740, 871, 925, 962, 1040, 1072, 1300, 1340, 1480, 1675, 1742, 1850, 1924, 2405, 2479, 2600, 2680, 2960, 3350, 3484, 3700, 3848, 4355, 4810, 4958, 5200, 5360, 6700, 6968, 7400, 7696, 8710, 9620, 9916, 12025, 12395, 13400, 13936, 14800, 17420, 19240, 19832, 21775, 24050, 24790, 26800, 32227, 34840, 38480, 39664, 43550, 48100, 49580, 61975, 64454, 69680, 87100, 96200, 99160, 123950, 128908, 161135, 174200, 192400, 198320, 247900, 257816, 322270, 348400, 495800, 515632, 644540, 805675, 991600, 1289080, 1611350, 2578160, 3222700, 6445400, 12890800]

約数ペア:

[(1, 12890800), (2, 6445400), (4, 3222700), (5, 2578160), (8, 1611350), (10, 1289080), (13, 991600), (16, 805675), (20, 644540), (25, 515632), (26, 495800), (37, 348400), (40, 322270), (50, 257816), (52, 247900), (65, 198320), (67, 192400), (74, 174200), (80, 161135), (100, 128908), (104, 123950), (130, 99160), (134, 96200), (148, 87100), (185, 69680), (200, 64454), (208, 61975), (260, 49580), (268, 48100), (296, 43550), (325, 39664), (335, 38480), (370, 34840), (400, 32227), (481, 26800), (520, 24790), (536, 24050), (592, 21775), (650, 19832), (670, 19240), (740, 17420), (871, 14800), (925, 13936), (962, 13400), (1040, 12395), (1072, 12025), (1300, 9916), (1340, 9620), (1480, 8710), (1675, 7696), (1742, 7400), (1850, 6968), (1924, 6700), (2405, 5360), (2479, 5200), (2600, 4958), (2680, 4810), (2960, 4355), (3350, 3848), (3484, 3700)]