20260850

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:287

約数の個数: 48

約数和(自身を含む): 39673800

約数和(自身を除く): 19412950

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 89, 145, 157, 178, 290, 314, 445, 725, 785, 890, 1450, 1570, 2225, 2581, 3925, 4450, 4553, 5162, 7850, 9106, 12905, 13973, 22765, 25810, 27946, 45530, 64525, 69865, 113825, 129050, 139730, 227650, 349325, 405217, 698650, 810434, 2026085, 4052170, 10130425, 20260850]

約数ペア:

[(1, 20260850), (2, 10130425), (5, 4052170), (10, 2026085), (25, 810434), (29, 698650), (50, 405217), (58, 349325), (89, 227650), (145, 139730), (157, 129050), (178, 113825), (290, 69865), (314, 64525), (445, 45530), (725, 27946), (785, 25810), (890, 22765), (1450, 13973), (1570, 12905), (2225, 9106), (2581, 7850), (3925, 5162), (4450, 4553)]