20464515

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{241}}^1$

素因数の和:309

約数の個数: 64

約数和(自身を含む): 39726720

約数和(自身を除く): 19262205

約数列:

[1, 3, 5, 9, 15, 17, 27, 37, 45, 51, 85, 111, 135, 153, 185, 241, 255, 333, 459, 555, 629, 723, 765, 999, 1205, 1665, 1887, 2169, 2295, 3145, 3615, 4097, 4995, 5661, 6507, 8917, 9435, 10845, 12291, 16983, 20485, 26751, 28305, 32535, 36873, 44585, 61455, 80253, 84915, 110619, 133755, 151589, 184365, 240759, 401265, 454767, 553095, 757945, 1203795, 1364301, 2273835, 4092903, 6821505, 20464515]

約数ペア:

[(1, 20464515), (3, 6821505), (5, 4092903), (9, 2273835), (15, 1364301), (17, 1203795), (27, 757945), (37, 553095), (45, 454767), (51, 401265), (85, 240759), (111, 184365), (135, 151589), (153, 133755), (185, 110619), (241, 84915), (255, 80253), (333, 61455), (459, 44585), (555, 36873), (629, 32535), (723, 28305), (765, 26751), (999, 20485), (1205, 16983), (1665, 12291), (1887, 10845), (2169, 9435), (2295, 8917), (3145, 6507), (3615, 5661), (4097, 4995)]