21165720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{233}}^1\times {\mathrm{757}}^1$

素因数の和:1004

約数の個数: 64

約数和(自身を含む): 63853920

約数和(自身を除く): 42688200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 233, 466, 699, 757, 932, 1165, 1398, 1514, 1864, 2271, 2330, 2796, 3028, 3495, 3785, 4542, 4660, 5592, 6056, 6990, 7570, 9084, 9320, 11355, 13980, 15140, 18168, 22710, 27960, 30280, 45420, 90840, 176381, 352762, 529143, 705524, 881905, 1058286, 1411048, 1763810, 2116572, 2645715, 3527620, 4233144, 5291430, 7055240, 10582860, 21165720]

約数ペア:

[(1, 21165720), (2, 10582860), (3, 7055240), (4, 5291430), (5, 4233144), (6, 3527620), (8, 2645715), (10, 2116572), (12, 1763810), (15, 1411048), (20, 1058286), (24, 881905), (30, 705524), (40, 529143), (60, 352762), (120, 176381), (233, 90840), (466, 45420), (699, 30280), (757, 27960), (932, 22710), (1165, 18168), (1398, 15140), (1514, 13980), (1864, 11355), (2271, 9320), (2330, 9084), (2796, 7570), (3028, 6990), (3495, 6056), (3785, 5592), (4542, 4660)]