291298120

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{20173}}^1$

素因数の和:20222

約数の個数: 48

約数和(自身を含む): 691766460

約数和(自身を除く): 400468340

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 361, 380, 722, 760, 1444, 1805, 2888, 3610, 7220, 14440, 20173, 40346, 80692, 100865, 161384, 201730, 383287, 403460, 766574, 806920, 1533148, 1916435, 3066296, 3832870, 7282453, 7665740, 14564906, 15331480, 29129812, 36412265, 58259624, 72824530, 145649060, 291298120]

約数ペア:

[(1, 291298120), (2, 145649060), (4, 72824530), (5, 58259624), (8, 36412265), (10, 29129812), (19, 15331480), (20, 14564906), (38, 7665740), (40, 7282453), (76, 3832870), (95, 3066296), (152, 1916435), (190, 1533148), (361, 806920), (380, 766574), (722, 403460), (760, 383287), (1444, 201730), (1805, 161384), (2888, 100865), (3610, 80692), (7220, 40346), (14440, 20173)]