639299610

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{1997}}^1\times {\mathrm{3557}}^1$

素因数の和:5567

約数の個数: 48

約数和(自身を含む): 1663478856

約数和(自身を除く): 1024179246

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 1997, 3557, 3994, 5991, 7114, 9985, 10671, 11982, 17785, 17973, 19970, 21342, 29955, 32013, 35570, 35946, 53355, 59910, 64026, 89865, 106710, 160065, 179730, 320130, 7103329, 14206658, 21309987, 35516645, 42619974, 63929961, 71033290, 106549935, 127859922, 213099870, 319649805, 639299610]

約数ペア:

[(1, 639299610), (2, 319649805), (3, 213099870), (5, 127859922), (6, 106549935), (9, 71033290), (10, 63929961), (15, 42619974), (18, 35516645), (30, 21309987), (45, 14206658), (90, 7103329), (1997, 320130), (3557, 179730), (3994, 160065), (5991, 106710), (7114, 89865), (9985, 64026), (10671, 59910), (11982, 53355), (17785, 35946), (17973, 35570), (19970, 32013), (21342, 29955)]