20101336820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{456641}}^1$

素因数の和:456752

約数の個数: 48

約数和(自身を含む): 44188333056

約数和(自身を除く): 24086996236

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 71, 124, 142, 155, 284, 310, 355, 620, 710, 1420, 2201, 4402, 8804, 11005, 22010, 44020, 456641, 913282, 1826564, 2283205, 4566410, 9132820, 14155871, 28311742, 32421511, 56623484, 64843022, 70779355, 129686044, 141558710, 162107555, 283117420, 324215110, 648430220, 1005066841, 2010133682, 4020267364, 5025334205, 10050668410, 20101336820]

約数ペア:

[(1, 20101336820), (2, 10050668410), (4, 5025334205), (5, 4020267364), (10, 2010133682), (20, 1005066841), (31, 648430220), (62, 324215110), (71, 283117420), (124, 162107555), (142, 141558710), (155, 129686044), (284, 70779355), (310, 64843022), (355, 56623484), (620, 32421511), (710, 28311742), (1420, 14155871), (2201, 9132820), (4402, 4566410), (8804, 2283205), (11005, 1826564), (22010, 913282), (44020, 456641)]