28561520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{947}}^1$

素因数の和:1002

約数の個数: 80

約数和(自身を含む): 74057760

約数和(自身を除く): 45496240

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 29, 40, 52, 58, 65, 80, 104, 116, 130, 145, 208, 232, 260, 290, 377, 464, 520, 580, 754, 947, 1040, 1160, 1508, 1885, 1894, 2320, 3016, 3770, 3788, 4735, 6032, 7540, 7576, 9470, 12311, 15080, 15152, 18940, 24622, 27463, 30160, 37880, 49244, 54926, 61555, 75760, 98488, 109852, 123110, 137315, 196976, 219704, 246220, 274630, 357019, 439408, 492440, 549260, 714038, 984880, 1098520, 1428076, 1785095, 2197040, 2856152, 3570190, 5712304, 7140380, 14280760, 28561520]

約数ペア:

[(1, 28561520), (2, 14280760), (4, 7140380), (5, 5712304), (8, 3570190), (10, 2856152), (13, 2197040), (16, 1785095), (20, 1428076), (26, 1098520), (29, 984880), (40, 714038), (52, 549260), (58, 492440), (65, 439408), (80, 357019), (104, 274630), (116, 246220), (130, 219704), (145, 196976), (208, 137315), (232, 123110), (260, 109852), (290, 98488), (377, 75760), (464, 61555), (520, 54926), (580, 49244), (754, 37880), (947, 30160), (1040, 27463), (1160, 24622), (1508, 18940), (1885, 15152), (1894, 15080), (2320, 12311), (3016, 9470), (3770, 7576), (3788, 7540), (4735, 6032)]