21134475

素因数分解:

$3^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:165

約数の個数: 72

約数和(自身を含む): 40622400

約数和(自身を除く): 19487925

約数列:

[1, 3, 5, 9, 15, 25, 29, 41, 45, 75, 79, 87, 123, 145, 205, 225, 237, 261, 369, 395, 435, 615, 711, 725, 1025, 1185, 1189, 1305, 1845, 1975, 2175, 2291, 3075, 3239, 3555, 3567, 5925, 5945, 6525, 6873, 9225, 9717, 10701, 11455, 16195, 17775, 17835, 20619, 29151, 29725, 34365, 48585, 53505, 57275, 80975, 89175, 93931, 103095, 145755, 171825, 242925, 267525, 281793, 469655, 515475, 728775, 845379, 1408965, 2348275, 4226895, 7044825, 21134475]

約数ペア:

[(1, 21134475), (3, 7044825), (5, 4226895), (9, 2348275), (15, 1408965), (25, 845379), (29, 728775), (41, 515475), (45, 469655), (75, 281793), (79, 267525), (87, 242925), (123, 171825), (145, 145755), (205, 103095), (225, 93931), (237, 89175), (261, 80975), (369, 57275), (395, 53505), (435, 48585), (615, 34365), (711, 29725), (725, 29151), (1025, 20619), (1185, 17835), (1189, 17775), (1305, 16195), (1845, 11455), (1975, 10701), (2175, 9717), (2291, 9225), (3075, 6873), (3239, 6525), (3555, 5945), (3567, 5925)]