21856419

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{853}}^1$

素因数の和:948

約数の個数: 32

約数和(自身を含む): 35389760

約数和(自身を除く): 13533341

約数列:

[1, 3, 9, 13, 27, 39, 73, 117, 219, 351, 657, 853, 949, 1971, 2559, 2847, 7677, 8541, 11089, 23031, 25623, 33267, 62269, 99801, 186807, 299403, 560421, 809497, 1681263, 2428491, 7285473, 21856419]

約数ペア:

[(1, 21856419), (3, 7285473), (9, 2428491), (13, 1681263), (27, 809497), (39, 560421), (73, 299403), (117, 186807), (219, 99801), (351, 62269), (657, 33267), (853, 25623), (949, 23031), (1971, 11089), (2559, 8541), (2847, 7677)]