20157489940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4964899}}^1$

素因数の和:4964944

約数の個数: 48

約数和(自身を含む): 50046192000

約数和(自身を除く): 29888702060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 4964899, 9929798, 19859596, 24824495, 34754293, 49648990, 69508586, 99297980, 139017172, 143982071, 173771465, 287964142, 347542930, 575928284, 695085860, 719910355, 1007874497, 1439820710, 2015748994, 2879641420, 4031497988, 5039372485, 10078744970, 20157489940]

約数ペア:

[(1, 20157489940), (2, 10078744970), (4, 5039372485), (5, 4031497988), (7, 2879641420), (10, 2015748994), (14, 1439820710), (20, 1007874497), (28, 719910355), (29, 695085860), (35, 575928284), (58, 347542930), (70, 287964142), (116, 173771465), (140, 143982071), (145, 139017172), (203, 99297980), (290, 69508586), (406, 49648990), (580, 34754293), (812, 24824495), (1015, 19859596), (2030, 9929798), (4060, 4964899)]