20001375

素因数分解:

$3^2\times 5^3\times {\mathrm{23}}^1\times {\mathrm{773}}^1$

素因数の和:817

約数の個数: 48

約数和(自身を含む): 37672128

約数和(自身を除く): 17670753

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 69, 75, 115, 125, 207, 225, 345, 375, 575, 773, 1035, 1125, 1725, 2319, 2875, 3865, 5175, 6957, 8625, 11595, 17779, 19325, 25875, 34785, 53337, 57975, 88895, 96625, 160011, 173925, 266685, 289875, 444475, 800055, 869625, 1333425, 2222375, 4000275, 6667125, 20001375]

約数ペア:

[(1, 20001375), (3, 6667125), (5, 4000275), (9, 2222375), (15, 1333425), (23, 869625), (25, 800055), (45, 444475), (69, 289875), (75, 266685), (115, 173925), (125, 160011), (207, 96625), (225, 88895), (345, 57975), (375, 53337), (575, 34785), (773, 25875), (1035, 19325), (1125, 17779), (1725, 11595), (2319, 8625), (2875, 6957), (3865, 5175)]