19398620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{719}}^1$

素因数の和:818

約数の個数: 48

約数和(自身を含む): 43545600

約数和(自身を除く): 24146980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 71, 76, 95, 142, 190, 284, 355, 380, 710, 719, 1349, 1420, 1438, 2698, 2876, 3595, 5396, 6745, 7190, 13490, 13661, 14380, 26980, 27322, 51049, 54644, 68305, 102098, 136610, 204196, 255245, 273220, 510490, 969931, 1020980, 1939862, 3879724, 4849655, 9699310, 19398620]

約数ペア:

[(1, 19398620), (2, 9699310), (4, 4849655), (5, 3879724), (10, 1939862), (19, 1020980), (20, 969931), (38, 510490), (71, 273220), (76, 255245), (95, 204196), (142, 136610), (190, 102098), (284, 68305), (355, 54644), (380, 51049), (710, 27322), (719, 26980), (1349, 14380), (1420, 13661), (1438, 13490), (2698, 7190), (2876, 6745), (3595, 5396)]