21665248

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1009}}^1$

素因数の和:1091

約数の個数: 48

約数和(自身を含む): 47340720

約数和(自身を除く): 25675472

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 61, 88, 122, 176, 244, 352, 488, 671, 976, 1009, 1342, 1952, 2018, 2684, 4036, 5368, 8072, 10736, 11099, 16144, 21472, 22198, 32288, 44396, 61549, 88792, 123098, 177584, 246196, 355168, 492392, 677039, 984784, 1354078, 1969568, 2708156, 5416312, 10832624, 21665248]

約数ペア:

[(1, 21665248), (2, 10832624), (4, 5416312), (8, 2708156), (11, 1969568), (16, 1354078), (22, 984784), (32, 677039), (44, 492392), (61, 355168), (88, 246196), (122, 177584), (176, 123098), (244, 88792), (352, 61549), (488, 44396), (671, 32288), (976, 22198), (1009, 21472), (1342, 16144), (1952, 11099), (2018, 10736), (2684, 8072), (4036, 5368)]