20008907525

素因数分解:

$5^2\times {\mathrm{83}}^1\times {\mathrm{139}}^1\times {\mathrm{173}}^1\times {\mathrm{401}}^1$

素因数の和:806

約数の個数: 48

約数和(自身を含む): 25500242880

約数和(自身を除く): 5491335355

約数列:

[1, 5, 25, 83, 139, 173, 401, 415, 695, 865, 2005, 2075, 3475, 4325, 10025, 11537, 14359, 24047, 33283, 55739, 57685, 69373, 71795, 120235, 166415, 278695, 288425, 346865, 358975, 601175, 832075, 1393475, 1734325, 1995901, 4626337, 5757959, 9642847, 9979505, 23131685, 28789795, 48214235, 49897525, 115658425, 143948975, 241071175, 800356301, 4001781505, 20008907525]

約数ペア:

[(1, 20008907525), (5, 4001781505), (25, 800356301), (83, 241071175), (139, 143948975), (173, 115658425), (401, 49897525), (415, 48214235), (695, 28789795), (865, 23131685), (2005, 9979505), (2075, 9642847), (3475, 5757959), (4325, 4626337), (10025, 1995901), (11537, 1734325), (14359, 1393475), (24047, 832075), (33283, 601175), (55739, 358975), (57685, 346865), (69373, 288425), (71795, 278695), (120235, 166415)]