20871302420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1021}}^1\times {\mathrm{32971}}^1$

素因数の和:34032

約数の個数: 48

約数和(自身を含む): 45289284096

約数和(自身を除く): 24417981676

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 1021, 2042, 4084, 5105, 10210, 20420, 31651, 32971, 63302, 65942, 126604, 131884, 158255, 164855, 316510, 329710, 633020, 659420, 1022101, 2044202, 4088404, 5110505, 10221010, 20442020, 33663391, 67326782, 134653564, 168316955, 336633910, 673267820, 1043565121, 2087130242, 4174260484, 5217825605, 10435651210, 20871302420]

約数ペア:

[(1, 20871302420), (2, 10435651210), (4, 5217825605), (5, 4174260484), (10, 2087130242), (20, 1043565121), (31, 673267820), (62, 336633910), (124, 168316955), (155, 134653564), (310, 67326782), (620, 33663391), (1021, 20442020), (2042, 10221010), (4084, 5110505), (5105, 4088404), (10210, 2044202), (20420, 1022101), (31651, 659420), (32971, 633020), (63302, 329710), (65942, 316510), (126604, 164855), (131884, 158255)]