398200480

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{130987}}^1$

素因数の和:131021

約数の個数: 48

約数和(自身を含む): 990269280

約数和(自身を除く): 592068800

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 130987, 261974, 523948, 654935, 1047896, 1309870, 2095792, 2488753, 2619740, 4191584, 4977506, 5239480, 9955012, 10478960, 12443765, 19910024, 20957920, 24887530, 39820048, 49775060, 79640096, 99550120, 199100240, 398200480]

約数ペア:

[(1, 398200480), (2, 199100240), (4, 99550120), (5, 79640096), (8, 49775060), (10, 39820048), (16, 24887530), (19, 20957920), (20, 19910024), (32, 12443765), (38, 10478960), (40, 9955012), (76, 5239480), (80, 4977506), (95, 4191584), (152, 2619740), (160, 2488753), (190, 2095792), (304, 1309870), (380, 1047896), (608, 654935), (760, 523948), (1520, 261974), (3040, 130987)]