21248764

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 41932800

約数和(自身を除く): 20684036

約数列:

[1, 2, 4, 19, 29, 31, 38, 58, 62, 76, 116, 124, 311, 551, 589, 622, 899, 1102, 1178, 1244, 1798, 2204, 2356, 3596, 5909, 9019, 9641, 11818, 17081, 18038, 19282, 23636, 34162, 36076, 38564, 68324, 171361, 183179, 279589, 342722, 366358, 559178, 685444, 732716, 1118356, 5312191, 10624382, 21248764]

約数ペア:

[(1, 21248764), (2, 10624382), (4, 5312191), (19, 1118356), (29, 732716), (31, 685444), (38, 559178), (58, 366358), (62, 342722), (76, 279589), (116, 183179), (124, 171361), (311, 68324), (551, 38564), (589, 36076), (622, 34162), (899, 23636), (1102, 19282), (1178, 18038), (1244, 17081), (1798, 11818), (2204, 9641), (2356, 9019), (3596, 5909)]