19534640

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{4003}}^1$

素因数の和:4077

約数の個数: 40

約数和(自身を含む): 46174128

約数和(自身を除く): 26639488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4003, 4880, 8006, 16012, 20015, 32024, 40030, 64048, 80060, 160120, 244183, 320240, 488366, 976732, 1220915, 1953464, 2441830, 3906928, 4883660, 9767320, 19534640]

約数ペア:

[(1, 19534640), (2, 9767320), (4, 4883660), (5, 3906928), (8, 2441830), (10, 1953464), (16, 1220915), (20, 976732), (40, 488366), (61, 320240), (80, 244183), (122, 160120), (244, 80060), (305, 64048), (488, 40030), (610, 32024), (976, 20015), (1220, 16012), (2440, 8006), (4003, 4880)]