21131003640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{457}}^1\times {\mathrm{385321}}^1$

素因数の和:385792

約数の個数: 64

約数和(自身を含む): 63531891360

約数和(自身を除く): 42400887720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 457, 914, 1371, 1828, 2285, 2742, 3656, 4570, 5484, 6855, 9140, 10968, 13710, 18280, 27420, 54840, 385321, 770642, 1155963, 1541284, 1926605, 2311926, 3082568, 3853210, 4623852, 5779815, 7706420, 9247704, 11559630, 15412840, 23119260, 46238520, 176091697, 352183394, 528275091, 704366788, 880458485, 1056550182, 1408733576, 1760916970, 2113100364, 2641375455, 3521833940, 4226200728, 5282750910, 7043667880, 10565501820, 21131003640]

約数ペア:

[(1, 21131003640), (2, 10565501820), (3, 7043667880), (4, 5282750910), (5, 4226200728), (6, 3521833940), (8, 2641375455), (10, 2113100364), (12, 1760916970), (15, 1408733576), (20, 1056550182), (24, 880458485), (30, 704366788), (40, 528275091), (60, 352183394), (120, 176091697), (457, 46238520), (914, 23119260), (1371, 15412840), (1828, 11559630), (2285, 9247704), (2742, 7706420), (3656, 5779815), (4570, 4623852), (5484, 3853210), (6855, 3082568), (9140, 2311926), (10968, 1926605), (13710, 1541284), (18280, 1155963), (27420, 770642), (54840, 385321)]