18999525

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{199}}^1$

素因数の和:298

約数の個数: 48

約数和(自身を含む): 33728000

約数和(自身を除く): 14728475

約数列:

[1, 3, 5, 15, 19, 25, 57, 67, 75, 95, 199, 201, 285, 335, 475, 597, 995, 1005, 1273, 1425, 1675, 2985, 3781, 3819, 4975, 5025, 6365, 11343, 13333, 14925, 18905, 19095, 31825, 39999, 56715, 66665, 94525, 95475, 199995, 253327, 283575, 333325, 759981, 999975, 1266635, 3799905, 6333175, 18999525]

約数ペア:

[(1, 18999525), (3, 6333175), (5, 3799905), (15, 1266635), (19, 999975), (25, 759981), (57, 333325), (67, 283575), (75, 253327), (95, 199995), (199, 95475), (201, 94525), (285, 66665), (335, 56715), (475, 39999), (597, 31825), (995, 19095), (1005, 18905), (1273, 14925), (1425, 13333), (1675, 11343), (2985, 6365), (3781, 5025), (3819, 4975)]