20099925

素因数分解:

$3^2\times 5^2\times {\mathrm{157}}^1\times {\mathrm{569}}^1$

素因数の和:742

約数の個数: 36

約数和(自身を含む): 36294180

約数和(自身を除く): 16194255

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 157, 225, 471, 569, 785, 1413, 1707, 2355, 2845, 3925, 5121, 7065, 8535, 11775, 14225, 25605, 35325, 42675, 89333, 128025, 267999, 446665, 803997, 1339995, 2233325, 4019985, 6699975, 20099925]

約数ペア:

[(1, 20099925), (3, 6699975), (5, 4019985), (9, 2233325), (15, 1339995), (25, 803997), (45, 446665), (75, 267999), (157, 128025), (225, 89333), (471, 42675), (569, 35325), (785, 25605), (1413, 14225), (1707, 11775), (2355, 8535), (2845, 7065), (3925, 5121)]