21266620155

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1385899}}^1$

素因数の和:1385952

約数の個数: 48

約数和(自身を含む): 41510476800

約数和(自身を除く): 20243856645

約数列:

[1, 3, 5, 9, 11, 15, 31, 33, 45, 55, 93, 99, 155, 165, 279, 341, 465, 495, 1023, 1395, 1705, 3069, 5115, 15345, 1385899, 4157697, 6929495, 12473091, 15244889, 20788485, 42962869, 45734667, 62365455, 76224445, 128888607, 137204001, 214814345, 228673335, 386665821, 472591559, 644443035, 686020005, 1417774677, 1933329105, 2362957795, 4253324031, 7088873385, 21266620155]

約数ペア:

[(1, 21266620155), (3, 7088873385), (5, 4253324031), (9, 2362957795), (11, 1933329105), (15, 1417774677), (31, 686020005), (33, 644443035), (45, 472591559), (55, 386665821), (93, 228673335), (99, 214814345), (155, 137204001), (165, 128888607), (279, 76224445), (341, 62365455), (465, 45734667), (495, 42962869), (1023, 20788485), (1395, 15244889), (1705, 12473091), (3069, 6929495), (5115, 4157697), (15345, 1385899)]