21380458850

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{641}}^1\times {\mathrm{39241}}^1$

素因数の和:39911

約数の個数: 48

約数和(自身を含む): 42173691336

約数和(自身を除く): 20793232486

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 170, 425, 641, 850, 1282, 3205, 6410, 10897, 16025, 21794, 32050, 39241, 54485, 78482, 108970, 196205, 272425, 392410, 544850, 667097, 981025, 1334194, 1962050, 3335485, 6670970, 16677425, 25153481, 33354850, 50306962, 125767405, 251534810, 427609177, 628837025, 855218354, 1257674050, 2138045885, 4276091770, 10690229425, 21380458850]

約数ペア:

[(1, 21380458850), (2, 10690229425), (5, 4276091770), (10, 2138045885), (17, 1257674050), (25, 855218354), (34, 628837025), (50, 427609177), (85, 251534810), (170, 125767405), (425, 50306962), (641, 33354850), (850, 25153481), (1282, 16677425), (3205, 6670970), (6410, 3335485), (10897, 1962050), (16025, 1334194), (21794, 981025), (32050, 667097), (39241, 544850), (54485, 392410), (78482, 272425), (108970, 196205)]