20668020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5647}}^1$

素因数の和:5720

約数の個数: 48

約数和(自身を含む): 58829568

約数和(自身を除く): 38161548

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 61, 122, 183, 244, 305, 366, 610, 732, 915, 1220, 1830, 3660, 5647, 11294, 16941, 22588, 28235, 33882, 56470, 67764, 84705, 112940, 169410, 338820, 344467, 688934, 1033401, 1377868, 1722335, 2066802, 3444670, 4133604, 5167005, 6889340, 10334010, 20668020]

約数ペア:

[(1, 20668020), (2, 10334010), (3, 6889340), (4, 5167005), (5, 4133604), (6, 3444670), (10, 2066802), (12, 1722335), (15, 1377868), (20, 1033401), (30, 688934), (60, 344467), (61, 338820), (122, 169410), (183, 112940), (244, 84705), (305, 67764), (366, 56470), (610, 33882), (732, 28235), (915, 22588), (1220, 16941), (1830, 11294), (3660, 5647)]