21741975

素因数分解:

$3^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{1361}}^1$

素因数の和:1448

約数の個数: 36

約数和(自身を含む): 39519792

約数和(自身を除く): 17777817

約数列:

[1, 3, 5, 9, 15, 25, 45, 71, 75, 213, 225, 355, 639, 1065, 1361, 1775, 3195, 4083, 5325, 6805, 12249, 15975, 20415, 34025, 61245, 96631, 102075, 289893, 306225, 483155, 869679, 1449465, 2415775, 4348395, 7247325, 21741975]

約数ペア:

[(1, 21741975), (3, 7247325), (5, 4348395), (9, 2415775), (15, 1449465), (25, 869679), (45, 483155), (71, 306225), (75, 289893), (213, 102075), (225, 96631), (355, 61245), (639, 34025), (1065, 20415), (1361, 15975), (1775, 12249), (3195, 6805), (4083, 5325)]