189901900

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^2\times {\mathrm{6571}}^1$

素因数の和:6619

約数の個数: 54

約数和(自身を含む): 437820068

約数和(自身を除く): 247918168

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 170, 289, 340, 425, 578, 850, 1156, 1445, 1700, 2890, 5780, 6571, 7225, 13142, 14450, 26284, 28900, 32855, 65710, 111707, 131420, 164275, 223414, 328550, 446828, 558535, 657100, 1117070, 1899019, 2234140, 2792675, 3798038, 5585350, 7596076, 9495095, 11170700, 18990190, 37980380, 47475475, 94950950, 189901900]

約数ペア:

[(1, 189901900), (2, 94950950), (4, 47475475), (5, 37980380), (10, 18990190), (17, 11170700), (20, 9495095), (25, 7596076), (34, 5585350), (50, 3798038), (68, 2792675), (85, 2234140), (100, 1899019), (170, 1117070), (289, 657100), (340, 558535), (425, 446828), (578, 328550), (850, 223414), (1156, 164275), (1445, 131420), (1700, 111707), (2890, 65710), (5780, 32855), (6571, 28900), (7225, 26284), (13142, 14450)]