21992080

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{373}}^1$

素因数の和:464

約数の個数: 80

約数和(自身を含む): 56764224

約数和(自身を除く): 34772144

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 67, 80, 88, 110, 134, 176, 220, 268, 335, 373, 440, 536, 670, 737, 746, 880, 1072, 1340, 1474, 1492, 1865, 2680, 2948, 2984, 3685, 3730, 4103, 5360, 5896, 5968, 7370, 7460, 8206, 11792, 14740, 14920, 16412, 20515, 24991, 29480, 29840, 32824, 41030, 49982, 58960, 65648, 82060, 99964, 124955, 164120, 199928, 249910, 274901, 328240, 399856, 499820, 549802, 999640, 1099604, 1374505, 1999280, 2199208, 2749010, 4398416, 5498020, 10996040, 21992080]

約数ペア:

[(1, 21992080), (2, 10996040), (4, 5498020), (5, 4398416), (8, 2749010), (10, 2199208), (11, 1999280), (16, 1374505), (20, 1099604), (22, 999640), (40, 549802), (44, 499820), (55, 399856), (67, 328240), (80, 274901), (88, 249910), (110, 199928), (134, 164120), (176, 124955), (220, 99964), (268, 82060), (335, 65648), (373, 58960), (440, 49982), (536, 41030), (670, 32824), (737, 29840), (746, 29480), (880, 24991), (1072, 20515), (1340, 16412), (1474, 14920), (1492, 14740), (1865, 11792), (2680, 8206), (2948, 7460), (2984, 7370), (3685, 5968), (3730, 5896), (4103, 5360)]