20784055360

素因数分解:

$2^6\times 5^1\times {\mathrm{311}}^1\times {\mathrm{208843}}^1$

素因数の和:209171

約数の個数: 56

約数和(自身を含む): 49651407936

約数和(自身を除く): 28867352576

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 311, 320, 622, 1244, 1555, 2488, 3110, 4976, 6220, 9952, 12440, 19904, 24880, 49760, 99520, 208843, 417686, 835372, 1044215, 1670744, 2088430, 3341488, 4176860, 6682976, 8353720, 13365952, 16707440, 33414880, 64950173, 66829760, 129900346, 259800692, 324750865, 519601384, 649501730, 1039202768, 1299003460, 2078405536, 2598006920, 4156811072, 5196013840, 10392027680, 20784055360]

約数ペア:

[(1, 20784055360), (2, 10392027680), (4, 5196013840), (5, 4156811072), (8, 2598006920), (10, 2078405536), (16, 1299003460), (20, 1039202768), (32, 649501730), (40, 519601384), (64, 324750865), (80, 259800692), (160, 129900346), (311, 66829760), (320, 64950173), (622, 33414880), (1244, 16707440), (1555, 13365952), (2488, 8353720), (3110, 6682976), (4976, 4176860), (6220, 3341488), (9952, 2088430), (12440, 1670744), (19904, 1044215), (24880, 835372), (49760, 417686), (99520, 208843)]