278049395

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{1877}}^1$

素因数の和:1991

約数の個数: 32

約数和(自身を含む): 374818752

約数和(自身を除く): 96769357

約数列:

[1, 5, 13, 43, 53, 65, 215, 265, 559, 689, 1877, 2279, 2795, 3445, 9385, 11395, 24401, 29627, 80711, 99481, 122005, 148135, 403555, 497405, 1049243, 1293253, 4277683, 5246215, 6466265, 21388415, 55609879, 278049395]

約数ペア:

[(1, 278049395), (5, 55609879), (13, 21388415), (43, 6466265), (53, 5246215), (65, 4277683), (215, 1293253), (265, 1049243), (559, 497405), (689, 403555), (1877, 148135), (2279, 122005), (2795, 99481), (3445, 80711), (9385, 29627), (11395, 24401)]