20974360

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{653}}^1$

素因数の和:748

約数の個数: 64

約数和(自身を含む): 52267680

約数和(自身を除く): 31293320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 73, 88, 110, 146, 220, 292, 365, 440, 584, 653, 730, 803, 1306, 1460, 1606, 2612, 2920, 3212, 3265, 4015, 5224, 6424, 6530, 7183, 8030, 13060, 14366, 16060, 26120, 28732, 32120, 35915, 47669, 57464, 71830, 95338, 143660, 190676, 238345, 287320, 381352, 476690, 524359, 953380, 1048718, 1906760, 2097436, 2621795, 4194872, 5243590, 10487180, 20974360]

約数ペア:

[(1, 20974360), (2, 10487180), (4, 5243590), (5, 4194872), (8, 2621795), (10, 2097436), (11, 1906760), (20, 1048718), (22, 953380), (40, 524359), (44, 476690), (55, 381352), (73, 287320), (88, 238345), (110, 190676), (146, 143660), (220, 95338), (292, 71830), (365, 57464), (440, 47669), (584, 35915), (653, 32120), (730, 28732), (803, 26120), (1306, 16060), (1460, 14366), (1606, 13060), (2612, 8030), (2920, 7183), (3212, 6530), (3265, 6424), (4015, 5224)]