21281128

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{269}}^1$

素因数の和:346

約数の個数: 64

約数和(自身を含む): 46656000

約数和(自身を除く): 25374872

約数列:

[1, 2, 4, 8, 11, 22, 29, 31, 44, 58, 62, 88, 116, 124, 232, 248, 269, 319, 341, 538, 638, 682, 899, 1076, 1276, 1364, 1798, 2152, 2552, 2728, 2959, 3596, 5918, 7192, 7801, 8339, 9889, 11836, 15602, 16678, 19778, 23672, 31204, 33356, 39556, 62408, 66712, 79112, 85811, 91729, 171622, 183458, 241831, 343244, 366916, 483662, 686488, 733832, 967324, 1934648, 2660141, 5320282, 10640564, 21281128]

約数ペア:

[(1, 21281128), (2, 10640564), (4, 5320282), (8, 2660141), (11, 1934648), (22, 967324), (29, 733832), (31, 686488), (44, 483662), (58, 366916), (62, 343244), (88, 241831), (116, 183458), (124, 171622), (232, 91729), (248, 85811), (269, 79112), (319, 66712), (341, 62408), (538, 39556), (638, 33356), (682, 31204), (899, 23672), (1076, 19778), (1276, 16678), (1364, 15602), (1798, 11836), (2152, 9889), (2552, 8339), (2728, 7801), (2959, 7192), (3596, 5918)]