19513520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{647}}^1$

素因数の和:702

約数の個数: 80

約数和(自身を含む): 50621760

約数和(自身を除く): 31108240

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, 647, 754, 1040, 1160, 1294, 1508, 1885, 2320, 2588, 3016, 3235, 3770, 5176, 6032, 6470, 7540, 8411, 10352, 12940, 15080, 16822, 18763, 25880, 30160, 33644, 37526, 42055, 51760, 67288, 75052, 84110, 93815, 134576, 150104, 168220, 187630, 243919, 300208, 336440, 375260, 487838, 672880, 750520, 975676, 1219595, 1501040, 1951352, 2439190, 3902704, 4878380, 9756760, 19513520]

約数ペア:

[(1, 19513520), (2, 9756760), (4, 4878380), (5, 3902704), (8, 2439190), (10, 1951352), (13, 1501040), (16, 1219595), (20, 975676), (26, 750520), (29, 672880), (40, 487838), (52, 375260), (58, 336440), (65, 300208), (80, 243919), (104, 187630), (116, 168220), (130, 150104), (145, 134576), (208, 93815), (232, 84110), (260, 75052), (290, 67288), (377, 51760), (464, 42055), (520, 37526), (580, 33644), (647, 30160), (754, 25880), (1040, 18763), (1160, 16822), (1294, 15080), (1508, 12940), (1885, 10352), (2320, 8411), (2588, 7540), (3016, 6470), (3235, 6032), (3770, 5176)]