21240050

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{797}}^1$

素因数の和:863

約数の個数: 48

約数和(自身を含む): 43637832

約数和(自身を除く): 22397782

約数列:

[1, 2, 5, 10, 13, 25, 26, 41, 50, 65, 82, 130, 205, 325, 410, 533, 650, 797, 1025, 1066, 1594, 2050, 2665, 3985, 5330, 7970, 10361, 13325, 19925, 20722, 26650, 32677, 39850, 51805, 65354, 103610, 163385, 259025, 326770, 424801, 518050, 816925, 849602, 1633850, 2124005, 4248010, 10620025, 21240050]

約数ペア:

[(1, 21240050), (2, 10620025), (5, 4248010), (10, 2124005), (13, 1633850), (25, 849602), (26, 816925), (41, 518050), (50, 424801), (65, 326770), (82, 259025), (130, 163385), (205, 103610), (325, 65354), (410, 51805), (533, 39850), (650, 32677), (797, 26650), (1025, 20722), (1066, 19925), (1594, 13325), (2050, 10361), (2665, 7970), (3985, 5330)]