21218256

素因数分解:

$2^4\times 3^2\times {\mathrm{29}}^1\times {\mathrm{5081}}^1$

素因数の和:5124

約数の個数: 60

約数和(自身を含む): 61441380

約数和(自身を除く): 40223124

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 29, 36, 48, 58, 72, 87, 116, 144, 174, 232, 261, 348, 464, 522, 696, 1044, 1392, 2088, 4176, 5081, 10162, 15243, 20324, 30486, 40648, 45729, 60972, 81296, 91458, 121944, 147349, 182916, 243888, 294698, 365832, 442047, 589396, 731664, 884094, 1178792, 1326141, 1768188, 2357584, 2652282, 3536376, 5304564, 7072752, 10609128, 21218256]

約数ペア:

[(1, 21218256), (2, 10609128), (3, 7072752), (4, 5304564), (6, 3536376), (8, 2652282), (9, 2357584), (12, 1768188), (16, 1326141), (18, 1178792), (24, 884094), (29, 731664), (36, 589396), (48, 442047), (58, 365832), (72, 294698), (87, 243888), (116, 182916), (144, 147349), (174, 121944), (232, 91458), (261, 81296), (348, 60972), (464, 45729), (522, 40648), (696, 30486), (1044, 20324), (1392, 15243), (2088, 10162), (4176, 5081)]