21538080

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{14957}}^1$

素因数の和:14978

約数の個数: 72

約数和(自身を含む): 73503612

約数和(自身を除く): 51965532

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, 14957, 29914, 44871, 59828, 74785, 89742, 119656, 134613, 149570, 179484, 224355, 239312, 269226, 299140, 358968, 448710, 478624, 538452, 598280, 673065, 717936, 897420, 1076904, 1196560, 1346130, 1435872, 1794840, 2153808, 2393120, 2692260, 3589680, 4307616, 5384520, 7179360, 10769040, 21538080]

約数ペア:

[(1, 21538080), (2, 10769040), (3, 7179360), (4, 5384520), (5, 4307616), (6, 3589680), (8, 2692260), (9, 2393120), (10, 2153808), (12, 1794840), (15, 1435872), (16, 1346130), (18, 1196560), (20, 1076904), (24, 897420), (30, 717936), (32, 673065), (36, 598280), (40, 538452), (45, 478624), (48, 448710), (60, 358968), (72, 299140), (80, 269226), (90, 239312), (96, 224355), (120, 179484), (144, 149570), (160, 134613), (180, 119656), (240, 89742), (288, 74785), (360, 59828), (480, 44871), (720, 29914), (1440, 14957)]