20861149456

素因数分解:

$2^4\times 7^2\times {\mathrm{163}}^1\times {\mathrm{163243}}^1$

素因数の和:163428

約数の個数: 60

約数和(自身を含む): 47306152272

約数和(自身を除く): 26445002816

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 163, 196, 326, 392, 652, 784, 1141, 1304, 2282, 2608, 4564, 7987, 9128, 15974, 18256, 31948, 63896, 127792, 163243, 326486, 652972, 1142701, 1305944, 2285402, 2611888, 4570804, 7998907, 9141608, 15997814, 18283216, 26608609, 31995628, 53217218, 63991256, 106434436, 127982512, 186260263, 212868872, 372520526, 425737744, 745041052, 1303821841, 1490082104, 2607643682, 2980164208, 5215287364, 10430574728, 20861149456]

約数ペア:

[(1, 20861149456), (2, 10430574728), (4, 5215287364), (7, 2980164208), (8, 2607643682), (14, 1490082104), (16, 1303821841), (28, 745041052), (49, 425737744), (56, 372520526), (98, 212868872), (112, 186260263), (163, 127982512), (196, 106434436), (326, 63991256), (392, 53217218), (652, 31995628), (784, 26608609), (1141, 18283216), (1304, 15997814), (2282, 9141608), (2608, 7998907), (4564, 4570804), (7987, 2611888), (9128, 2285402), (15974, 1305944), (18256, 1142701), (31948, 652972), (63896, 326486), (127792, 163243)]