20615940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2161}}^1$

素因数の和:2229

約数の個数: 72

約数和(自身を含む): 63744408

約数和(自身を除く): 43128468

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 53, 60, 90, 106, 159, 180, 212, 265, 318, 477, 530, 636, 795, 954, 1060, 1590, 1908, 2161, 2385, 3180, 4322, 4770, 6483, 8644, 9540, 10805, 12966, 19449, 21610, 25932, 32415, 38898, 43220, 64830, 77796, 97245, 114533, 129660, 194490, 229066, 343599, 388980, 458132, 572665, 687198, 1030797, 1145330, 1374396, 1717995, 2061594, 2290660, 3435990, 4123188, 5153985, 6871980, 10307970, 20615940]

約数ペア:

[(1, 20615940), (2, 10307970), (3, 6871980), (4, 5153985), (5, 4123188), (6, 3435990), (9, 2290660), (10, 2061594), (12, 1717995), (15, 1374396), (18, 1145330), (20, 1030797), (30, 687198), (36, 572665), (45, 458132), (53, 388980), (60, 343599), (90, 229066), (106, 194490), (159, 129660), (180, 114533), (212, 97245), (265, 77796), (318, 64830), (477, 43220), (530, 38898), (636, 32415), (795, 25932), (954, 21610), (1060, 19449), (1590, 12966), (1908, 10805), (2161, 9540), (2385, 8644), (3180, 6483), (4322, 4770)]