21221298

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1811}}^1$

素因数の和:1860

約数の個数: 64

約数和(自身を含む): 55664640

約数和(自身を除く): 34443342

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 31, 42, 54, 62, 63, 93, 126, 186, 189, 217, 279, 378, 434, 558, 651, 837, 1302, 1674, 1811, 1953, 3622, 3906, 5433, 5859, 10866, 11718, 12677, 16299, 25354, 32598, 38031, 48897, 56141, 76062, 97794, 112282, 114093, 168423, 228186, 336846, 342279, 392987, 505269, 684558, 785974, 1010538, 1178961, 1515807, 2357922, 3031614, 3536883, 7073766, 10610649, 21221298]

約数ペア:

[(1, 21221298), (2, 10610649), (3, 7073766), (6, 3536883), (7, 3031614), (9, 2357922), (14, 1515807), (18, 1178961), (21, 1010538), (27, 785974), (31, 684558), (42, 505269), (54, 392987), (62, 342279), (63, 336846), (93, 228186), (126, 168423), (186, 114093), (189, 112282), (217, 97794), (279, 76062), (378, 56141), (434, 48897), (558, 38031), (651, 32598), (837, 25354), (1302, 16299), (1674, 12677), (1811, 11718), (1953, 10866), (3622, 5859), (3906, 5433)]