20271375

素因数分解:

$3^2\times 5^3\times {\mathrm{37}}^1\times {\mathrm{487}}^1$

素因数の和:545

約数の個数: 48

約数和(自身を含む): 37607232

約数和(自身を除く): 17335857

約数列:

[1, 3, 5, 9, 15, 25, 37, 45, 75, 111, 125, 185, 225, 333, 375, 487, 555, 925, 1125, 1461, 1665, 2435, 2775, 4383, 4625, 7305, 8325, 12175, 13875, 18019, 21915, 36525, 41625, 54057, 60875, 90095, 109575, 162171, 182625, 270285, 450475, 547875, 810855, 1351425, 2252375, 4054275, 6757125, 20271375]

約数ペア:

[(1, 20271375), (3, 6757125), (5, 4054275), (9, 2252375), (15, 1351425), (25, 810855), (37, 547875), (45, 450475), (75, 270285), (111, 182625), (125, 162171), (185, 109575), (225, 90095), (333, 60875), (375, 54057), (487, 41625), (555, 36525), (925, 21915), (1125, 18019), (1461, 13875), (1665, 12175), (2435, 8325), (2775, 7305), (4383, 4625)]