21382648

素因数分解:

$2^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1$

素因数の和:260

約数の個数: 64

約数和(自身を含む): 47980800

約数和(自身を除く): 26598152

約数列:

[1, 2, 4, 7, 8, 14, 28, 41, 56, 67, 82, 134, 139, 164, 268, 278, 287, 328, 469, 536, 556, 574, 938, 973, 1112, 1148, 1876, 1946, 2296, 2747, 3752, 3892, 5494, 5699, 7784, 9313, 10988, 11398, 18626, 19229, 21976, 22796, 37252, 38458, 39893, 45592, 65191, 74504, 76916, 79786, 130382, 153832, 159572, 260764, 319144, 381833, 521528, 763666, 1527332, 2672831, 3054664, 5345662, 10691324, 21382648]

約数ペア:

[(1, 21382648), (2, 10691324), (4, 5345662), (7, 3054664), (8, 2672831), (14, 1527332), (28, 763666), (41, 521528), (56, 381833), (67, 319144), (82, 260764), (134, 159572), (139, 153832), (164, 130382), (268, 79786), (278, 76916), (287, 74504), (328, 65191), (469, 45592), (536, 39893), (556, 38458), (574, 37252), (938, 22796), (973, 21976), (1112, 19229), (1148, 18626), (1876, 11398), (1946, 10988), (2296, 9313), (2747, 7784), (3752, 5699), (3892, 5494)]