21030525

素因数分解:

$3^2\times 5^2\times {\mathrm{151}}^1\times {\mathrm{619}}^1$

素因数の和:786

約数の個数: 36

約数和(自身を含む): 37978720

約数和(自身を除く): 16948195

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 151, 225, 453, 619, 755, 1359, 1857, 2265, 3095, 3775, 5571, 6795, 9285, 11325, 15475, 27855, 33975, 46425, 93469, 139275, 280407, 467345, 841221, 1402035, 2336725, 4206105, 7010175, 21030525]

約数ペア:

[(1, 21030525), (3, 7010175), (5, 4206105), (9, 2336725), (15, 1402035), (25, 841221), (45, 467345), (75, 280407), (151, 139275), (225, 93469), (453, 46425), (619, 33975), (755, 27855), (1359, 15475), (1857, 11325), (2265, 9285), (3095, 6795), (3775, 5571)]