21663840

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{373}}^1$

素因数の和:413

約数の個数: 144

約数和(自身を含む): 75209904

約数和(自身を除く): 53546064

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 32, 33, 40, 44, 48, 55, 60, 66, 80, 88, 96, 110, 120, 121, 132, 160, 165, 176, 220, 240, 242, 264, 330, 352, 363, 373, 440, 480, 484, 528, 605, 660, 726, 746, 880, 968, 1056, 1119, 1210, 1320, 1452, 1492, 1760, 1815, 1865, 1936, 2238, 2420, 2640, 2904, 2984, 3630, 3730, 3872, 4103, 4476, 4840, 5280, 5595, 5808, 5968, 7260, 7460, 8206, 8952, 9680, 11190, 11616, 11936, 12309, 14520, 14920, 16412, 17904, 19360, 20515, 22380, 24618, 29040, 29840, 32824, 35808, 41030, 44760, 45133, 49236, 58080, 59680, 61545, 65648, 82060, 89520, 90266, 98472, 123090, 131296, 135399, 164120, 179040, 180532, 196944, 225665, 246180, 270798, 328240, 361064, 393888, 451330, 492360, 541596, 656480, 676995, 722128, 902660, 984720, 1083192, 1353990, 1444256, 1805320, 1969440, 2166384, 2707980, 3610640, 4332768, 5415960, 7221280, 10831920, 21663840]

約数ペア:

[(1, 21663840), (2, 10831920), (3, 7221280), (4, 5415960), (5, 4332768), (6, 3610640), (8, 2707980), (10, 2166384), (11, 1969440), (12, 1805320), (15, 1444256), (16, 1353990), (20, 1083192), (22, 984720), (24, 902660), (30, 722128), (32, 676995), (33, 656480), (40, 541596), (44, 492360), (48, 451330), (55, 393888), (60, 361064), (66, 328240), (80, 270798), (88, 246180), (96, 225665), (110, 196944), (120, 180532), (121, 179040), (132, 164120), (160, 135399), (165, 131296), (176, 123090), (220, 98472), (240, 90266), (242, 89520), (264, 82060), (330, 65648), (352, 61545), (363, 59680), (373, 58080), (440, 49236), (480, 45133), (484, 44760), (528, 41030), (605, 35808), (660, 32824), (726, 29840), (746, 29040), (880, 24618), (968, 22380), (1056, 20515), (1119, 19360), (1210, 17904), (1320, 16412), (1452, 14920), (1492, 14520), (1760, 12309), (1815, 11936), (1865, 11616), (1936, 11190), (2238, 9680), (2420, 8952), (2640, 8206), (2904, 7460), (2984, 7260), (3630, 5968), (3730, 5808), (3872, 5595), (4103, 5280), (4476, 4840)]