21729150

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{109}}^1\times {\mathrm{443}}^1$

素因数の和:570

約数の個数: 72

約数和(自身を含む): 59047560

約数和(自身を除く): 37318410

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 109, 150, 218, 225, 327, 443, 450, 545, 654, 886, 981, 1090, 1329, 1635, 1962, 2215, 2658, 2725, 3270, 3987, 4430, 4905, 5450, 6645, 7974, 8175, 9810, 11075, 13290, 16350, 19935, 22150, 24525, 33225, 39870, 48287, 49050, 66450, 96574, 99675, 144861, 199350, 241435, 289722, 434583, 482870, 724305, 869166, 1207175, 1448610, 2172915, 2414350, 3621525, 4345830, 7243050, 10864575, 21729150]

約数ペア:

[(1, 21729150), (2, 10864575), (3, 7243050), (5, 4345830), (6, 3621525), (9, 2414350), (10, 2172915), (15, 1448610), (18, 1207175), (25, 869166), (30, 724305), (45, 482870), (50, 434583), (75, 289722), (90, 241435), (109, 199350), (150, 144861), (218, 99675), (225, 96574), (327, 66450), (443, 49050), (450, 48287), (545, 39870), (654, 33225), (886, 24525), (981, 22150), (1090, 19935), (1329, 16350), (1635, 13290), (1962, 11075), (2215, 9810), (2658, 8175), (2725, 7974), (3270, 6645), (3987, 5450), (4430, 4905)]