64879900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{20929}}^1$

素因数の和:20974

約数の個数: 36

約数和(自身を含む): 145337920

約数和(自身を除く): 80458020

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 310, 620, 775, 1550, 3100, 20929, 41858, 83716, 104645, 209290, 418580, 523225, 648799, 1046450, 1297598, 2092900, 2595196, 3243995, 6487990, 12975980, 16219975, 32439950, 64879900]

約数ペア:

[(1, 64879900), (2, 32439950), (4, 16219975), (5, 12975980), (10, 6487990), (20, 3243995), (25, 2595196), (31, 2092900), (50, 1297598), (62, 1046450), (100, 648799), (124, 523225), (155, 418580), (310, 209290), (620, 104645), (775, 83716), (1550, 41858), (3100, 20929)]