18420229640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{206783}}^1$

素因数の和:206942

約数の個数: 64

約数和(自身を含む): 44218690560

約数和(自身を除く): 25798460920

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 131, 136, 170, 262, 340, 524, 655, 680, 1048, 1310, 2227, 2620, 4454, 5240, 8908, 11135, 17816, 22270, 44540, 89080, 206783, 413566, 827132, 1033915, 1654264, 2067830, 3515311, 4135660, 7030622, 8271320, 14061244, 17576555, 27088573, 28122488, 35153110, 54177146, 70306220, 108354292, 135442865, 140612440, 216708584, 270885730, 460505741, 541771460, 921011482, 1083542920, 1842022964, 2302528705, 3684045928, 4605057410, 9210114820, 18420229640]

約数ペア:

[(1, 18420229640), (2, 9210114820), (4, 4605057410), (5, 3684045928), (8, 2302528705), (10, 1842022964), (17, 1083542920), (20, 921011482), (34, 541771460), (40, 460505741), (68, 270885730), (85, 216708584), (131, 140612440), (136, 135442865), (170, 108354292), (262, 70306220), (340, 54177146), (524, 35153110), (655, 28122488), (680, 27088573), (1048, 17576555), (1310, 14061244), (2227, 8271320), (2620, 7030622), (4454, 4135660), (5240, 3515311), (8908, 2067830), (11135, 1654264), (17816, 1033915), (22270, 827132), (44540, 413566), (89080, 206783)]