21280495106

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{41}}^2\times {\mathrm{331}}^1\times {\mathrm{1471}}^1$

素因数の和:1899

約数の個数: 48

約数和(自身を含む): 35365553664

約数和(自身を除く): 14085058558

約数列:

[1, 2, 13, 26, 41, 82, 331, 533, 662, 1066, 1471, 1681, 2942, 3362, 4303, 8606, 13571, 19123, 21853, 27142, 38246, 43706, 60311, 120622, 176423, 352846, 486901, 556411, 784043, 973802, 1112822, 1568086, 2472751, 4945502, 6329713, 7233343, 12659426, 14466686, 19962941, 32145763, 39925882, 64291526, 259518233, 519036466, 818480581, 1636961162, 10640247553, 21280495106]

約数ペア:

[(1, 21280495106), (2, 10640247553), (13, 1636961162), (26, 818480581), (41, 519036466), (82, 259518233), (331, 64291526), (533, 39925882), (662, 32145763), (1066, 19962941), (1471, 14466686), (1681, 12659426), (2942, 7233343), (3362, 6329713), (4303, 4945502), (8606, 2472751), (13571, 1568086), (19123, 1112822), (21853, 973802), (27142, 784043), (38246, 556411), (43706, 486901), (60311, 352846), (120622, 176423)]