800000050

素因数分解:

$2^1\times 5^2\times {\mathrm{109}}^1\times {\mathrm{229}}^1\times {\mathrm{641}}^1$

素因数の和:991

約数の個数: 48

約数和(自身を含む): 1510561800

約数和(自身を除く): 710561750

約数列:

[1, 2, 5, 10, 25, 50, 109, 218, 229, 458, 545, 641, 1090, 1145, 1282, 2290, 2725, 3205, 5450, 5725, 6410, 11450, 16025, 24961, 32050, 49922, 69869, 124805, 139738, 146789, 249610, 293578, 349345, 624025, 698690, 733945, 1248050, 1467890, 1746725, 3493450, 3669725, 7339450, 16000001, 32000002, 80000005, 160000010, 400000025, 800000050]

約数ペア:

[(1, 800000050), (2, 400000025), (5, 160000010), (10, 80000005), (25, 32000002), (50, 16000001), (109, 7339450), (218, 3669725), (229, 3493450), (458, 1746725), (545, 1467890), (641, 1248050), (1090, 733945), (1145, 698690), (1282, 624025), (2290, 349345), (2725, 293578), (3205, 249610), (5450, 146789), (5725, 139738), (6410, 124805), (11450, 69869), (16025, 49922), (24961, 32050)]