21492580025

素因数分解:

$5^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{431}}^1\times {\mathrm{3607}}^1$

素因数の和:4134

約数の個数: 48

約数和(自身を含む): 30923735040

約数和(自身を除く): 9431155015

約数列:

[1, 5, 7, 25, 35, 79, 175, 395, 431, 553, 1975, 2155, 2765, 3017, 3607, 10775, 13825, 15085, 18035, 25249, 34049, 75425, 90175, 126245, 170245, 238343, 284953, 631225, 851225, 1191715, 1424765, 1554617, 1994671, 5958575, 7123825, 7773085, 9973355, 10882319, 38865425, 49866775, 54411595, 122814743, 272057975, 614073715, 859703201, 3070368575, 4298516005, 21492580025]

約数ペア:

[(1, 21492580025), (5, 4298516005), (7, 3070368575), (25, 859703201), (35, 614073715), (79, 272057975), (175, 122814743), (395, 54411595), (431, 49866775), (553, 38865425), (1975, 10882319), (2155, 9973355), (2765, 7773085), (3017, 7123825), (3607, 5958575), (10775, 1994671), (13825, 1554617), (15085, 1424765), (18035, 1191715), (25249, 851225), (34049, 631225), (75425, 284953), (90175, 238343), (126245, 170245)]