198972880

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{80231}}^1$

素因数の和:80275

約数の個数: 40

約数和(自身を含む): 477540864

約数和(自身を除く): 278567984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 80231, 160462, 320924, 401155, 641848, 802310, 1283696, 1604620, 2487161, 3209240, 4974322, 6418480, 9948644, 12435805, 19897288, 24871610, 39794576, 49743220, 99486440, 198972880]

約数ペア:

[(1, 198972880), (2, 99486440), (4, 49743220), (5, 39794576), (8, 24871610), (10, 19897288), (16, 12435805), (20, 9948644), (31, 6418480), (40, 4974322), (62, 3209240), (80, 2487161), (124, 1604620), (155, 1283696), (248, 802310), (310, 641848), (496, 401155), (620, 320924), (1240, 160462), (2480, 80231)]