21352275

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{4519}}^1$

素因数の和:4545

約数の個数: 48

約数和(自身を含む): 44838400

約数和(自身を除く): 23486125

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 105, 135, 175, 189, 225, 315, 525, 675, 945, 1575, 4519, 4725, 13557, 22595, 31633, 40671, 67785, 94899, 112975, 122013, 158165, 203355, 284697, 338925, 474495, 610065, 790825, 854091, 1016775, 1423485, 2372475, 3050325, 4270455, 7117425, 21352275]

約数ペア:

[(1, 21352275), (3, 7117425), (5, 4270455), (7, 3050325), (9, 2372475), (15, 1423485), (21, 1016775), (25, 854091), (27, 790825), (35, 610065), (45, 474495), (63, 338925), (75, 284697), (105, 203355), (135, 158165), (175, 122013), (189, 112975), (225, 94899), (315, 67785), (525, 40671), (675, 31633), (945, 22595), (1575, 13557), (4519, 4725)]