25761520

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5279}}^1$

素因数の和:5353

約数の個数: 40

約数和(自身を含む): 60888960

約数和(自身を除く): 35127440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 5279, 10558, 21116, 26395, 42232, 52790, 84464, 105580, 211160, 322019, 422320, 644038, 1288076, 1610095, 2576152, 3220190, 5152304, 6440380, 12880760, 25761520]

約数ペア:

[(1, 25761520), (2, 12880760), (4, 6440380), (5, 5152304), (8, 3220190), (10, 2576152), (16, 1610095), (20, 1288076), (40, 644038), (61, 422320), (80, 322019), (122, 211160), (244, 105580), (305, 84464), (488, 52790), (610, 42232), (976, 26395), (1220, 21116), (2440, 10558), (4880, 5279)]