28139895

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{569}}^1$

素因数の和:744

約数の個数: 48

約数和(自身を含む): 56197440

約数和(自身を除く): 28057545

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 157, 315, 471, 569, 785, 1099, 1413, 1707, 2355, 2845, 3297, 3983, 5121, 5495, 7065, 8535, 9891, 11949, 16485, 19915, 25605, 35847, 49455, 59745, 89333, 179235, 267999, 446665, 625331, 803997, 1339995, 1875993, 3126655, 4019985, 5627979, 9379965, 28139895]

約数ペア:

[(1, 28139895), (3, 9379965), (5, 5627979), (7, 4019985), (9, 3126655), (15, 1875993), (21, 1339995), (35, 803997), (45, 625331), (63, 446665), (105, 267999), (157, 179235), (315, 89333), (471, 59745), (569, 49455), (785, 35847), (1099, 25605), (1413, 19915), (1707, 16485), (2355, 11949), (2845, 9891), (3297, 8535), (3983, 7065), (5121, 5495)]