21428880

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{8117}}^1$

素因数の和:8144

約数の個数: 80

約数和(自身を含む): 72477504

約数和(自身を除く): 51048624

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 80, 88, 110, 120, 132, 165, 176, 220, 240, 264, 330, 440, 528, 660, 880, 1320, 2640, 8117, 16234, 24351, 32468, 40585, 48702, 64936, 81170, 89287, 97404, 121755, 129872, 162340, 178574, 194808, 243510, 267861, 324680, 357148, 389616, 446435, 487020, 535722, 649360, 714296, 892870, 974040, 1071444, 1339305, 1428592, 1785740, 1948080, 2142888, 2678610, 3571480, 4285776, 5357220, 7142960, 10714440, 21428880]

約数ペア:

[(1, 21428880), (2, 10714440), (3, 7142960), (4, 5357220), (5, 4285776), (6, 3571480), (8, 2678610), (10, 2142888), (11, 1948080), (12, 1785740), (15, 1428592), (16, 1339305), (20, 1071444), (22, 974040), (24, 892870), (30, 714296), (33, 649360), (40, 535722), (44, 487020), (48, 446435), (55, 389616), (60, 357148), (66, 324680), (80, 267861), (88, 243510), (110, 194808), (120, 178574), (132, 162340), (165, 129872), (176, 121755), (220, 97404), (240, 89287), (264, 81170), (330, 64936), (440, 48702), (528, 40585), (660, 32468), (880, 24351), (1320, 16234), (2640, 8117)]