20236780

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:139

約数の個数: 96

約数和(自身を含む): 48263040

約数和(自身を除く): 28026260

約数列:

[1, 2, 4, 5, 10, 20, 23, 29, 37, 41, 46, 58, 74, 82, 92, 115, 116, 145, 148, 164, 185, 205, 230, 290, 370, 410, 460, 580, 667, 740, 820, 851, 943, 1073, 1189, 1334, 1517, 1702, 1886, 2146, 2378, 2668, 3034, 3335, 3404, 3772, 4255, 4292, 4715, 4756, 5365, 5945, 6068, 6670, 7585, 8510, 9430, 10730, 11890, 13340, 15170, 17020, 18860, 21460, 23780, 24679, 27347, 30340, 34891, 43993, 49358, 54694, 69782, 87986, 98716, 109388, 123395, 136735, 139564, 174455, 175972, 219965, 246790, 273470, 348910, 439930, 493580, 546940, 697820, 879860, 1011839, 2023678, 4047356, 5059195, 10118390, 20236780]

約数ペア:

[(1, 20236780), (2, 10118390), (4, 5059195), (5, 4047356), (10, 2023678), (20, 1011839), (23, 879860), (29, 697820), (37, 546940), (41, 493580), (46, 439930), (58, 348910), (74, 273470), (82, 246790), (92, 219965), (115, 175972), (116, 174455), (145, 139564), (148, 136735), (164, 123395), (185, 109388), (205, 98716), (230, 87986), (290, 69782), (370, 54694), (410, 49358), (460, 43993), (580, 34891), (667, 30340), (740, 27347), (820, 24679), (851, 23780), (943, 21460), (1073, 18860), (1189, 17020), (1334, 15170), (1517, 13340), (1702, 11890), (1886, 10730), (2146, 9430), (2378, 8510), (2668, 7585), (3034, 6670), (3335, 6068), (3404, 5945), (3772, 5365), (4255, 4756), (4292, 4715)]