20313017620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{163}}^1\times {\mathrm{127163}}^1$

素因数の和:127349

約数の個数: 72

約数和(自身を含む): 49926621024

約数和(自身を除く): 29613603404

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 163, 196, 245, 326, 490, 652, 815, 980, 1141, 1630, 2282, 3260, 4564, 5705, 7987, 11410, 15974, 22820, 31948, 39935, 79870, 127163, 159740, 254326, 508652, 635815, 890141, 1271630, 1780282, 2543260, 3560564, 4450705, 6230987, 8901410, 12461974, 17802820, 20727569, 24923948, 31154935, 41455138, 62309870, 82910276, 103637845, 124619740, 145092983, 207275690, 290185966, 414551380, 580371932, 725464915, 1015650881, 1450929830, 2031301762, 2901859660, 4062603524, 5078254405, 10156508810, 20313017620]

約数ペア:

[(1, 20313017620), (2, 10156508810), (4, 5078254405), (5, 4062603524), (7, 2901859660), (10, 2031301762), (14, 1450929830), (20, 1015650881), (28, 725464915), (35, 580371932), (49, 414551380), (70, 290185966), (98, 207275690), (140, 145092983), (163, 124619740), (196, 103637845), (245, 82910276), (326, 62309870), (490, 41455138), (652, 31154935), (815, 24923948), (980, 20727569), (1141, 17802820), (1630, 12461974), (2282, 8901410), (3260, 6230987), (4564, 4450705), (5705, 3560564), (7987, 2543260), (11410, 1780282), (15974, 1271630), (22820, 890141), (31948, 635815), (39935, 508652), (79870, 254326), (127163, 159740)]