72758380

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{181}}^1\times {\mathrm{199}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 155937600

約数和(自身を除く): 83179220

約数列:

[1, 2, 4, 5, 10, 20, 101, 181, 199, 202, 362, 398, 404, 505, 724, 796, 905, 995, 1010, 1810, 1990, 2020, 3620, 3980, 18281, 20099, 36019, 36562, 40198, 72038, 73124, 80396, 91405, 100495, 144076, 180095, 182810, 200990, 360190, 365620, 401980, 720380, 3637919, 7275838, 14551676, 18189595, 36379190, 72758380]

約数ペア:

[(1, 72758380), (2, 36379190), (4, 18189595), (5, 14551676), (10, 7275838), (20, 3637919), (101, 720380), (181, 401980), (199, 365620), (202, 360190), (362, 200990), (398, 182810), (404, 180095), (505, 144076), (724, 100495), (796, 91405), (905, 80396), (995, 73124), (1010, 72038), (1810, 40198), (1990, 36562), (2020, 36019), (3620, 20099), (3980, 18281)]