21000565430

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{557}}^1\times {\mathrm{290023}}^1$

素因数の和:290600

約数の個数: 32

約数和(自身を含む): 40782014784

約数和(自身を除く): 19781449354

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 557, 1114, 2785, 5570, 7241, 14482, 36205, 72410, 290023, 580046, 1450115, 2900230, 3770299, 7540598, 18851495, 37702990, 161542811, 323085622, 807714055, 1615428110, 2100056543, 4200113086, 10500282715, 21000565430]

約数ペア:

[(1, 21000565430), (2, 10500282715), (5, 4200113086), (10, 2100056543), (13, 1615428110), (26, 807714055), (65, 323085622), (130, 161542811), (557, 37702990), (1114, 18851495), (2785, 7540598), (5570, 3770299), (7241, 2900230), (14482, 1450115), (36205, 580046), (72410, 290023)]