204814520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{165173}}^1$

素因数の和:165215

約数の個数: 32

約数和(自身を含む): 475701120

約数和(自身を除く): 270886600

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 165173, 330346, 660692, 825865, 1321384, 1651730, 3303460, 5120363, 6606920, 10240726, 20481452, 25601815, 40962904, 51203630, 102407260, 204814520]

約数ペア:

[(1, 204814520), (2, 102407260), (4, 51203630), (5, 40962904), (8, 25601815), (10, 20481452), (20, 10240726), (31, 6606920), (40, 5120363), (62, 3303460), (124, 1651730), (155, 1321384), (248, 825865), (310, 660692), (620, 330346), (1240, 165173)]