18020920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{14533}}^1$

素因数の和:14575

約数の個数: 32

約数和(自身を含む): 41857920

約数和(自身を除く): 23837000

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 14533, 29066, 58132, 72665, 116264, 145330, 290660, 450523, 581320, 901046, 1802092, 2252615, 3604184, 4505230, 9010460, 18020920]

約数ペア:

[(1, 18020920), (2, 9010460), (4, 4505230), (5, 3604184), (8, 2252615), (10, 1802092), (20, 901046), (31, 581320), (40, 450523), (62, 290660), (124, 145330), (155, 116264), (248, 72665), (310, 58132), (620, 29066), (1240, 14533)]