20419425

素因数分解:

$3^3\times 5^2\times {\mathrm{13}}^2\times {\mathrm{179}}^1$

素因数の和:224

約数の個数: 72

約数和(自身を含む): 40845600

約数和(自身を除く): 20426175

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 39, 45, 65, 75, 117, 135, 169, 179, 195, 225, 325, 351, 507, 537, 585, 675, 845, 895, 975, 1521, 1611, 1755, 2327, 2535, 2685, 2925, 4225, 4475, 4563, 4833, 6981, 7605, 8055, 8775, 11635, 12675, 13425, 20943, 22815, 24165, 30251, 34905, 38025, 40275, 58175, 62829, 90753, 104715, 114075, 120825, 151255, 174525, 272259, 314145, 453765, 523575, 756275, 816777, 1361295, 1570725, 2268825, 4083885, 6806475, 20419425]

約数ペア:

[(1, 20419425), (3, 6806475), (5, 4083885), (9, 2268825), (13, 1570725), (15, 1361295), (25, 816777), (27, 756275), (39, 523575), (45, 453765), (65, 314145), (75, 272259), (117, 174525), (135, 151255), (169, 120825), (179, 114075), (195, 104715), (225, 90753), (325, 62829), (351, 58175), (507, 40275), (537, 38025), (585, 34905), (675, 30251), (845, 24165), (895, 22815), (975, 20943), (1521, 13425), (1611, 12675), (1755, 11635), (2327, 8775), (2535, 8055), (2685, 7605), (2925, 6981), (4225, 4833), (4475, 4563)]