21989664

素因数分解:

$2^5\times 3^3\times {\mathrm{31}}^1\times {\mathrm{821}}^1$

素因数の和:871

約数の個数: 96

約数和(自身を含む): 66286080

約数和(自身を除く): 44296416

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 31, 32, 36, 48, 54, 62, 72, 93, 96, 108, 124, 144, 186, 216, 248, 279, 288, 372, 432, 496, 558, 744, 821, 837, 864, 992, 1116, 1488, 1642, 1674, 2232, 2463, 2976, 3284, 3348, 4464, 4926, 6568, 6696, 7389, 8928, 9852, 13136, 13392, 14778, 19704, 22167, 25451, 26272, 26784, 29556, 39408, 44334, 50902, 59112, 76353, 78816, 88668, 101804, 118224, 152706, 177336, 203608, 229059, 236448, 305412, 354672, 407216, 458118, 610824, 687177, 709344, 814432, 916236, 1221648, 1374354, 1832472, 2443296, 2748708, 3664944, 5497416, 7329888, 10994832, 21989664]

約数ペア:

[(1, 21989664), (2, 10994832), (3, 7329888), (4, 5497416), (6, 3664944), (8, 2748708), (9, 2443296), (12, 1832472), (16, 1374354), (18, 1221648), (24, 916236), (27, 814432), (31, 709344), (32, 687177), (36, 610824), (48, 458118), (54, 407216), (62, 354672), (72, 305412), (93, 236448), (96, 229059), (108, 203608), (124, 177336), (144, 152706), (186, 118224), (216, 101804), (248, 88668), (279, 78816), (288, 76353), (372, 59112), (432, 50902), (496, 44334), (558, 39408), (744, 29556), (821, 26784), (837, 26272), (864, 25451), (992, 22167), (1116, 19704), (1488, 14778), (1642, 13392), (1674, 13136), (2232, 9852), (2463, 8928), (2976, 7389), (3284, 6696), (3348, 6568), (4464, 4926)]