21287520

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{14783}}^1$

素因数の和:14804

約数の個数: 72

約数和(自身を含む): 72648576

約数和(自身を除く): 51361056

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 14783, 29566, 44349, 59132, 73915, 88698, 118264, 133047, 147830, 177396, 221745, 236528, 266094, 295660, 354792, 443490, 473056, 532188, 591320, 665235, 709584, 886980, 1064376, 1182640, 1330470, 1419168, 1773960, 2128752, 2365280, 2660940, 3547920, 4257504, 5321880, 7095840, 10643760, 21287520]

約数ペア:

[(1, 21287520), (2, 10643760), (3, 7095840), (4, 5321880), (5, 4257504), (6, 3547920), (8, 2660940), (9, 2365280), (10, 2128752), (12, 1773960), (15, 1419168), (16, 1330470), (18, 1182640), (20, 1064376), (24, 886980), (30, 709584), (32, 665235), (36, 591320), (40, 532188), (45, 473056), (48, 443490), (60, 354792), (72, 295660), (80, 266094), (90, 236528), (96, 221745), (120, 177396), (144, 147830), (160, 133047), (180, 118264), (240, 88698), (288, 73915), (360, 59132), (480, 44349), (720, 29566), (1440, 14783)]