19797075

素因数分解:

$3^3\times 5^2\times {\mathrm{139}}^1\times {\mathrm{211}}^1$

素因数の和:369

約数の個数: 48

約数和(自身を含む): 36803200

約数和(自身を除く): 17006125

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 139, 211, 225, 417, 633, 675, 695, 1055, 1251, 1899, 2085, 3165, 3475, 3753, 5275, 5697, 6255, 9495, 10425, 15825, 18765, 28485, 29329, 31275, 47475, 87987, 93825, 142425, 146645, 263961, 439935, 733225, 791883, 1319805, 2199675, 3959415, 6599025, 19797075]

約数ペア:

[(1, 19797075), (3, 6599025), (5, 3959415), (9, 2199675), (15, 1319805), (25, 791883), (27, 733225), (45, 439935), (75, 263961), (135, 146645), (139, 142425), (211, 93825), (225, 87987), (417, 47475), (633, 31275), (675, 29329), (695, 28485), (1055, 18765), (1251, 15825), (1899, 10425), (2085, 9495), (3165, 6255), (3475, 5697), (3753, 5275)]