21371625

素因数分解:

$3^2\times 5^3\times {\mathrm{11}}^2\times {\mathrm{157}}^1$

素因数の和:200

約数の個数: 72

約数和(自身を含む): 42616392

約数和(自身を除く): 21244767

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 121, 125, 157, 165, 225, 275, 363, 375, 471, 495, 605, 785, 825, 1089, 1125, 1375, 1413, 1727, 1815, 2355, 2475, 3025, 3925, 4125, 5181, 5445, 7065, 8635, 9075, 11775, 12375, 15125, 15543, 18997, 19625, 25905, 27225, 35325, 43175, 45375, 56991, 58875, 77715, 94985, 129525, 136125, 170973, 176625, 215875, 284955, 388575, 474925, 647625, 854865, 1424775, 1942875, 2374625, 4274325, 7123875, 21371625]

約数ペア:

[(1, 21371625), (3, 7123875), (5, 4274325), (9, 2374625), (11, 1942875), (15, 1424775), (25, 854865), (33, 647625), (45, 474925), (55, 388575), (75, 284955), (99, 215875), (121, 176625), (125, 170973), (157, 136125), (165, 129525), (225, 94985), (275, 77715), (363, 58875), (375, 56991), (471, 45375), (495, 43175), (605, 35325), (785, 27225), (825, 25905), (1089, 19625), (1125, 18997), (1375, 15543), (1413, 15125), (1727, 12375), (1815, 11775), (2355, 9075), (2475, 8635), (3025, 7065), (3925, 5445), (4125, 5181)]