20475660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{331}}^1\times {\mathrm{1031}}^1$

素因数の和:1374

約数の個数: 48

約数和(自身を含む): 57560832

約数和(自身を除く): 37085172

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 331, 662, 993, 1031, 1324, 1655, 1986, 2062, 3093, 3310, 3972, 4124, 4965, 5155, 6186, 6620, 9930, 10310, 12372, 15465, 19860, 20620, 30930, 61860, 341261, 682522, 1023783, 1365044, 1706305, 2047566, 3412610, 4095132, 5118915, 6825220, 10237830, 20475660]

約数ペア:

[(1, 20475660), (2, 10237830), (3, 6825220), (4, 5118915), (5, 4095132), (6, 3412610), (10, 2047566), (12, 1706305), (15, 1365044), (20, 1023783), (30, 682522), (60, 341261), (331, 61860), (662, 30930), (993, 20620), (1031, 19860), (1324, 15465), (1655, 12372), (1986, 10310), (2062, 9930), (3093, 6620), (3310, 6186), (3972, 5155), (4124, 4965)]