221495640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{7723}}^1$

素因数の和:7976

約数の個数: 64

約数和(自身を含む): 667353600

約数和(自身を除く): 445857960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 239, 478, 717, 956, 1195, 1434, 1912, 2390, 2868, 3585, 4780, 5736, 7170, 7723, 9560, 14340, 15446, 23169, 28680, 30892, 38615, 46338, 61784, 77230, 92676, 115845, 154460, 185352, 231690, 308920, 463380, 926760, 1845797, 3691594, 5537391, 7383188, 9228985, 11074782, 14766376, 18457970, 22149564, 27686955, 36915940, 44299128, 55373910, 73831880, 110747820, 221495640]

約数ペア:

[(1, 221495640), (2, 110747820), (3, 73831880), (4, 55373910), (5, 44299128), (6, 36915940), (8, 27686955), (10, 22149564), (12, 18457970), (15, 14766376), (20, 11074782), (24, 9228985), (30, 7383188), (40, 5537391), (60, 3691594), (120, 1845797), (239, 926760), (478, 463380), (717, 308920), (956, 231690), (1195, 185352), (1434, 154460), (1912, 115845), (2390, 92676), (2868, 77230), (3585, 61784), (4780, 46338), (5736, 38615), (7170, 30892), (7723, 28680), (9560, 23169), (14340, 15446)]