18990810

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{2671}}^1$

素因数の和:2763

約数の個数: 48

約数和(自身を含む): 50019840

約数和(自身を除く): 31029030

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 79, 90, 158, 237, 395, 474, 711, 790, 1185, 1422, 2370, 2671, 3555, 5342, 7110, 8013, 13355, 16026, 24039, 26710, 40065, 48078, 80130, 120195, 211009, 240390, 422018, 633027, 1055045, 1266054, 1899081, 2110090, 3165135, 3798162, 6330270, 9495405, 18990810]

約数ペア:

[(1, 18990810), (2, 9495405), (3, 6330270), (5, 3798162), (6, 3165135), (9, 2110090), (10, 1899081), (15, 1266054), (18, 1055045), (30, 633027), (45, 422018), (79, 240390), (90, 211009), (158, 120195), (237, 80130), (395, 48078), (474, 40065), (711, 26710), (790, 24039), (1185, 16026), (1422, 13355), (2370, 8013), (2671, 7110), (3555, 5342)]