21634280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{239}}^1$

素因数の和:354

約数の個数: 64

約数和(自身を含む): 51148800

約数和(自身を除く): 29514520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 73, 124, 146, 155, 239, 248, 292, 310, 365, 478, 584, 620, 730, 956, 1195, 1240, 1460, 1912, 2263, 2390, 2920, 4526, 4780, 7409, 9052, 9560, 11315, 14818, 17447, 18104, 22630, 29636, 34894, 37045, 45260, 59272, 69788, 74090, 87235, 90520, 139576, 148180, 174470, 296360, 348940, 540857, 697880, 1081714, 2163428, 2704285, 4326856, 5408570, 10817140, 21634280]

約数ペア:

[(1, 21634280), (2, 10817140), (4, 5408570), (5, 4326856), (8, 2704285), (10, 2163428), (20, 1081714), (31, 697880), (40, 540857), (62, 348940), (73, 296360), (124, 174470), (146, 148180), (155, 139576), (239, 90520), (248, 87235), (292, 74090), (310, 69788), (365, 59272), (478, 45260), (584, 37045), (620, 34894), (730, 29636), (956, 22630), (1195, 18104), (1240, 17447), (1460, 14818), (1912, 11315), (2263, 9560), (2390, 9052), (2920, 7409), (4526, 4780)]