21079188

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{617}}^1$

素因数の和:713

約数の個数: 72

約数和(自身を含む): 58262568

約数和(自身を除く): 37183380

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 73, 78, 117, 146, 156, 219, 234, 292, 438, 468, 617, 657, 876, 949, 1234, 1314, 1851, 1898, 2468, 2628, 2847, 3702, 3796, 5553, 5694, 7404, 8021, 8541, 11106, 11388, 16042, 17082, 22212, 24063, 32084, 34164, 45041, 48126, 72189, 90082, 96252, 135123, 144378, 180164, 270246, 288756, 405369, 540492, 585533, 810738, 1171066, 1621476, 1756599, 2342132, 3513198, 5269797, 7026396, 10539594, 21079188]

約数ペア:

[(1, 21079188), (2, 10539594), (3, 7026396), (4, 5269797), (6, 3513198), (9, 2342132), (12, 1756599), (13, 1621476), (18, 1171066), (26, 810738), (36, 585533), (39, 540492), (52, 405369), (73, 288756), (78, 270246), (117, 180164), (146, 144378), (156, 135123), (219, 96252), (234, 90082), (292, 72189), (438, 48126), (468, 45041), (617, 34164), (657, 32084), (876, 24063), (949, 22212), (1234, 17082), (1314, 16042), (1851, 11388), (1898, 11106), (2468, 8541), (2628, 8021), (2847, 7404), (3702, 5694), (3796, 5553)]