20700575

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:216

約数の個数: 48

約数和(自身を含む): 31664640

約数和(自身を除く): 10964065

約数列:

[1, 5, 7, 23, 25, 35, 37, 115, 139, 161, 175, 185, 259, 575, 695, 805, 851, 925, 973, 1295, 3197, 3475, 4025, 4255, 4865, 5143, 5957, 6475, 15985, 21275, 22379, 24325, 25715, 29785, 36001, 79925, 111895, 118289, 128575, 148925, 180005, 559475, 591445, 828023, 900025, 2957225, 4140115, 20700575]

約数ペア:

[(1, 20700575), (5, 4140115), (7, 2957225), (23, 900025), (25, 828023), (35, 591445), (37, 559475), (115, 180005), (139, 148925), (161, 128575), (175, 118289), (185, 111895), (259, 79925), (575, 36001), (695, 29785), (805, 25715), (851, 24325), (925, 22379), (973, 21275), (1295, 15985), (3197, 6475), (3475, 5957), (4025, 5143), (4255, 4865)]