20289440

素因数分解:

$2^5\times 5^1\times {\mathrm{173}}^1\times {\mathrm{733}}^1$

素因数の和:921

約数の個数: 48

約数和(自身を含む): 48276648

約数和(自身を除く): 27987208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 173, 346, 692, 733, 865, 1384, 1466, 1730, 2768, 2932, 3460, 3665, 5536, 5864, 6920, 7330, 11728, 13840, 14660, 23456, 27680, 29320, 58640, 117280, 126809, 253618, 507236, 634045, 1014472, 1268090, 2028944, 2536180, 4057888, 5072360, 10144720, 20289440]

約数ペア:

[(1, 20289440), (2, 10144720), (4, 5072360), (5, 4057888), (8, 2536180), (10, 2028944), (16, 1268090), (20, 1014472), (32, 634045), (40, 507236), (80, 253618), (160, 126809), (173, 117280), (346, 58640), (692, 29320), (733, 27680), (865, 23456), (1384, 14660), (1466, 13840), (1730, 11728), (2768, 7330), (2932, 6920), (3460, 5864), (3665, 5536)]