21937960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{683}}^1$

素因数の和:778

約数の個数: 64

約数和(自身を含む): 54665280

約数和(自身を除く): 32727320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 73, 88, 110, 146, 220, 292, 365, 440, 584, 683, 730, 803, 1366, 1460, 1606, 2732, 2920, 3212, 3415, 4015, 5464, 6424, 6830, 7513, 8030, 13660, 15026, 16060, 27320, 30052, 32120, 37565, 49859, 60104, 75130, 99718, 150260, 199436, 249295, 300520, 398872, 498590, 548449, 997180, 1096898, 1994360, 2193796, 2742245, 4387592, 5484490, 10968980, 21937960]

約数ペア:

[(1, 21937960), (2, 10968980), (4, 5484490), (5, 4387592), (8, 2742245), (10, 2193796), (11, 1994360), (20, 1096898), (22, 997180), (40, 548449), (44, 498590), (55, 398872), (73, 300520), (88, 249295), (110, 199436), (146, 150260), (220, 99718), (292, 75130), (365, 60104), (440, 49859), (584, 37565), (683, 32120), (730, 30052), (803, 27320), (1366, 16060), (1460, 15026), (1606, 13660), (2732, 8030), (2920, 7513), (3212, 6830), (3415, 6424), (4015, 5464)]