20782216

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{28547}}^1$

素因数の和:28573

約数の個数: 32

約数和(自身を含む): 47960640

約数和(自身を除く): 27178424

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 28547, 57094, 114188, 199829, 228376, 371111, 399658, 742222, 799316, 1484444, 1598632, 2597777, 2968888, 5195554, 10391108, 20782216]

約数ペア:

[(1, 20782216), (2, 10391108), (4, 5195554), (7, 2968888), (8, 2597777), (13, 1598632), (14, 1484444), (26, 799316), (28, 742222), (52, 399658), (56, 371111), (91, 228376), (104, 199829), (182, 114188), (364, 57094), (728, 28547)]