42100821

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{21557}}^1$

素因数の和:21601

約数の個数: 24

約数和(自身を含む): 71745024

約数和(自身を除く): 29644203

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 651, 1953, 21557, 64671, 150899, 194013, 452697, 668267, 1358091, 2004801, 4677869, 6014403, 14033607, 42100821]

約数ペア:

[(1, 42100821), (3, 14033607), (7, 6014403), (9, 4677869), (21, 2004801), (31, 1358091), (63, 668267), (93, 452697), (217, 194013), (279, 150899), (651, 64671), (1953, 21557)]