21208020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{283}}^1\times {\mathrm{1249}}^1$

素因数の和:1544

約数の個数: 48

約数和(自身を含む): 59640000

約数和(自身を除く): 38431980

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 283, 566, 849, 1132, 1249, 1415, 1698, 2498, 2830, 3396, 3747, 4245, 4996, 5660, 6245, 7494, 8490, 12490, 14988, 16980, 18735, 24980, 37470, 74940, 353467, 706934, 1060401, 1413868, 1767335, 2120802, 3534670, 4241604, 5302005, 7069340, 10604010, 21208020]

約数ペア:

[(1, 21208020), (2, 10604010), (3, 7069340), (4, 5302005), (5, 4241604), (6, 3534670), (10, 2120802), (12, 1767335), (15, 1413868), (20, 1060401), (30, 706934), (60, 353467), (283, 74940), (566, 37470), (849, 24980), (1132, 18735), (1249, 16980), (1415, 14988), (1698, 12490), (2498, 8490), (2830, 7494), (3396, 6245), (3747, 5660), (4245, 4996)]