90900720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{661}}^1$

素因数の和:871

約数の個数: 120

約数和(自身を含む): 307337472

約数和(自身を除く): 216436752

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 191, 240, 360, 382, 573, 661, 720, 764, 955, 1146, 1322, 1528, 1719, 1910, 1983, 2292, 2644, 2865, 3056, 3305, 3438, 3820, 3966, 4584, 5288, 5730, 5949, 6610, 6876, 7640, 7932, 8595, 9168, 9915, 10576, 11460, 11898, 13220, 13752, 15280, 15864, 17190, 19830, 22920, 23796, 26440, 27504, 29745, 31728, 34380, 39660, 45840, 47592, 52880, 59490, 68760, 79320, 95184, 118980, 126251, 137520, 158640, 237960, 252502, 378753, 475920, 505004, 631255, 757506, 1010008, 1136259, 1262510, 1515012, 1893765, 2020016, 2272518, 2525020, 3030024, 3787530, 4545036, 5050040, 5681295, 6060048, 7575060, 9090072, 10100080, 11362590, 15150120, 18180144, 22725180, 30300240, 45450360, 90900720]

約数ペア:

[(1, 90900720), (2, 45450360), (3, 30300240), (4, 22725180), (5, 18180144), (6, 15150120), (8, 11362590), (9, 10100080), (10, 9090072), (12, 7575060), (15, 6060048), (16, 5681295), (18, 5050040), (20, 4545036), (24, 3787530), (30, 3030024), (36, 2525020), (40, 2272518), (45, 2020016), (48, 1893765), (60, 1515012), (72, 1262510), (80, 1136259), (90, 1010008), (120, 757506), (144, 631255), (180, 505004), (191, 475920), (240, 378753), (360, 252502), (382, 237960), (573, 158640), (661, 137520), (720, 126251), (764, 118980), (955, 95184), (1146, 79320), (1322, 68760), (1528, 59490), (1719, 52880), (1910, 47592), (1983, 45840), (2292, 39660), (2644, 34380), (2865, 31728), (3056, 29745), (3305, 27504), (3438, 26440), (3820, 23796), (3966, 22920), (4584, 19830), (5288, 17190), (5730, 15864), (5949, 15280), (6610, 13752), (6876, 13220), (7640, 11898), (7932, 11460), (8595, 10576), (9168, 9915)]