19930880

素因数分解:

$2^8\times 5^1\times {\mathrm{23}}^1\times {\mathrm{677}}^1$

素因数の和:721

約数の個数: 72

約数和(自身を含む): 49889952

約数和(自身を除く): 29959072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 256, 320, 368, 460, 640, 677, 736, 920, 1280, 1354, 1472, 1840, 2708, 2944, 3385, 3680, 5416, 5888, 6770, 7360, 10832, 13540, 14720, 15571, 21664, 27080, 29440, 31142, 43328, 54160, 62284, 77855, 86656, 108320, 124568, 155710, 173312, 216640, 249136, 311420, 433280, 498272, 622840, 866560, 996544, 1245680, 1993088, 2491360, 3986176, 4982720, 9965440, 19930880]

約数ペア:

[(1, 19930880), (2, 9965440), (4, 4982720), (5, 3986176), (8, 2491360), (10, 1993088), (16, 1245680), (20, 996544), (23, 866560), (32, 622840), (40, 498272), (46, 433280), (64, 311420), (80, 249136), (92, 216640), (115, 173312), (128, 155710), (160, 124568), (184, 108320), (230, 86656), (256, 77855), (320, 62284), (368, 54160), (460, 43328), (640, 31142), (677, 29440), (736, 27080), (920, 21664), (1280, 15571), (1354, 14720), (1472, 13540), (1840, 10832), (2708, 7360), (2944, 6770), (3385, 5888), (3680, 5416)]