21509640

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{401}}^1$

素因数の和:567

約数の個数: 96

約数和(自身を含む): 70551000

約数和(自身を除く): 49041360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 149, 180, 298, 360, 401, 447, 596, 745, 802, 894, 1192, 1203, 1341, 1490, 1604, 1788, 2005, 2235, 2406, 2682, 2980, 3208, 3576, 3609, 4010, 4470, 4812, 5364, 5960, 6015, 6705, 7218, 8020, 8940, 9624, 10728, 12030, 13410, 14436, 16040, 17880, 18045, 24060, 26820, 28872, 36090, 48120, 53640, 59749, 72180, 119498, 144360, 179247, 238996, 298745, 358494, 477992, 537741, 597490, 716988, 896235, 1075482, 1194980, 1433976, 1792470, 2150964, 2389960, 2688705, 3584940, 4301928, 5377410, 7169880, 10754820, 21509640]

約数ペア:

[(1, 21509640), (2, 10754820), (3, 7169880), (4, 5377410), (5, 4301928), (6, 3584940), (8, 2688705), (9, 2389960), (10, 2150964), (12, 1792470), (15, 1433976), (18, 1194980), (20, 1075482), (24, 896235), (30, 716988), (36, 597490), (40, 537741), (45, 477992), (60, 358494), (72, 298745), (90, 238996), (120, 179247), (149, 144360), (180, 119498), (298, 72180), (360, 59749), (401, 53640), (447, 48120), (596, 36090), (745, 28872), (802, 26820), (894, 24060), (1192, 18045), (1203, 17880), (1341, 16040), (1490, 14436), (1604, 13410), (1788, 12030), (2005, 10728), (2235, 9624), (2406, 8940), (2682, 8020), (2980, 7218), (3208, 6705), (3576, 6015), (3609, 5960), (4010, 5364), (4470, 4812)]