805220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1$

素因数の和:204

約数の個数: 48

約数和(自身を含む): 1928640

約数和(自身を除く): 1123420

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 163, 190, 247, 260, 326, 380, 494, 652, 815, 988, 1235, 1630, 2119, 2470, 3097, 3260, 4238, 4940, 6194, 8476, 10595, 12388, 15485, 21190, 30970, 40261, 42380, 61940, 80522, 161044, 201305, 402610, 805220]

約数ペア:

[(1, 805220), (2, 402610), (4, 201305), (5, 161044), (10, 80522), (13, 61940), (19, 42380), (20, 40261), (26, 30970), (38, 21190), (52, 15485), (65, 12388), (76, 10595), (95, 8476), (130, 6194), (163, 4940), (190, 4238), (247, 3260), (260, 3097), (326, 2470), (380, 2119), (494, 1630), (652, 1235), (815, 988)]