28900767

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{641}}^1$

素因数の和:783

約数の個数: 32

約数和(自身を含む): 46840320

約数和(自身を除く): 17939553

約数列:

[1, 3, 7, 19, 21, 57, 113, 133, 339, 399, 641, 791, 1923, 2147, 2373, 4487, 6441, 12179, 13461, 15029, 36537, 45087, 72433, 85253, 217299, 255759, 507031, 1376227, 1521093, 4128681, 9633589, 28900767]

約数ペア:

[(1, 28900767), (3, 9633589), (7, 4128681), (19, 1521093), (21, 1376227), (57, 507031), (113, 255759), (133, 217299), (339, 85253), (399, 72433), (641, 45087), (791, 36537), (1923, 15029), (2147, 13461), (2373, 12179), (4487, 6441)]