21149778

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{683}}^1$

素因数の和:1098

約数の個数: 32

約数和(自身を含む): 45734976

約数和(自身を除く): 24585198

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 397, 683, 794, 1191, 1366, 2049, 2382, 4098, 5161, 8879, 10322, 15483, 17758, 26637, 30966, 53274, 271151, 542302, 813453, 1626906, 3524963, 7049926, 10574889, 21149778]

約数ペア:

[(1, 21149778), (2, 10574889), (3, 7049926), (6, 3524963), (13, 1626906), (26, 813453), (39, 542302), (78, 271151), (397, 53274), (683, 30966), (794, 26637), (1191, 17758), (1366, 15483), (2049, 10322), (2382, 8879), (4098, 5161)]