20869875

素因数分解:

$3^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{1427}}^1$

素因数の和:1461

約数の個数: 48

約数和(自身を含む): 40543776

約数和(自身を除く): 19673901

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 125, 195, 225, 325, 375, 585, 975, 1125, 1427, 1625, 2925, 4281, 4875, 7135, 12843, 14625, 18551, 21405, 35675, 55653, 64215, 92755, 107025, 166959, 178375, 278265, 321075, 463775, 535125, 834795, 1391325, 1605375, 2318875, 4173975, 6956625, 20869875]

約数ペア:

[(1, 20869875), (3, 6956625), (5, 4173975), (9, 2318875), (13, 1605375), (15, 1391325), (25, 834795), (39, 535125), (45, 463775), (65, 321075), (75, 278265), (117, 178375), (125, 166959), (195, 107025), (225, 92755), (325, 64215), (375, 55653), (585, 35675), (975, 21405), (1125, 18551), (1427, 14625), (1625, 12843), (2925, 7135), (4281, 4875)]