18714860

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{787}}^1$

素因数の和:866

約数の個数: 48

約数和(自身を含む): 41700960

約数和(自身を除く): 22986100

約数列:

[1, 2, 4, 5, 10, 20, 29, 41, 58, 82, 116, 145, 164, 205, 290, 410, 580, 787, 820, 1189, 1574, 2378, 3148, 3935, 4756, 5945, 7870, 11890, 15740, 22823, 23780, 32267, 45646, 64534, 91292, 114115, 129068, 161335, 228230, 322670, 456460, 645340, 935743, 1871486, 3742972, 4678715, 9357430, 18714860]

約数ペア:

[(1, 18714860), (2, 9357430), (4, 4678715), (5, 3742972), (10, 1871486), (20, 935743), (29, 645340), (41, 456460), (58, 322670), (82, 228230), (116, 161335), (145, 129068), (164, 114115), (205, 91292), (290, 64534), (410, 45646), (580, 32267), (787, 23780), (820, 22823), (1189, 15740), (1574, 11890), (2378, 7870), (3148, 5945), (3935, 4756)]