20663580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49199}}^1$

素因数の和:49218

約数の個数: 48

約数和(自身を含む): 66124800

約数和(自身を除く): 45461220

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 49199, 98398, 147597, 196796, 245995, 295194, 344393, 491990, 590388, 688786, 737985, 983980, 1033179, 1377572, 1475970, 1721965, 2066358, 2951940, 3443930, 4132716, 5165895, 6887860, 10331790, 20663580]

約数ペア:

[(1, 20663580), (2, 10331790), (3, 6887860), (4, 5165895), (5, 4132716), (6, 3443930), (7, 2951940), (10, 2066358), (12, 1721965), (14, 1475970), (15, 1377572), (20, 1033179), (21, 983980), (28, 737985), (30, 688786), (35, 590388), (42, 491990), (60, 344393), (70, 295194), (84, 245995), (105, 196796), (140, 147597), (210, 98398), (420, 49199)]