278624080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{647}}^1\times {\mathrm{769}}^1$

素因数の和:1436

約数の個数: 80

約数和(自身を含む): 742452480

約数和(自身を除く): 463828400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 647, 769, 1294, 1538, 2588, 3076, 3235, 3845, 4529, 5176, 5383, 6152, 6470, 7690, 9058, 10352, 10766, 12304, 12940, 15380, 18116, 21532, 22645, 25880, 26915, 30760, 36232, 43064, 45290, 51760, 53830, 61520, 72464, 86128, 90580, 107660, 181160, 215320, 362320, 430640, 497543, 995086, 1990172, 2487715, 3482801, 3980344, 4975430, 6965602, 7960688, 9950860, 13931204, 17414005, 19901720, 27862408, 34828010, 39803440, 55724816, 69656020, 139312040, 278624080]

約数ペア:

[(1, 278624080), (2, 139312040), (4, 69656020), (5, 55724816), (7, 39803440), (8, 34828010), (10, 27862408), (14, 19901720), (16, 17414005), (20, 13931204), (28, 9950860), (35, 7960688), (40, 6965602), (56, 4975430), (70, 3980344), (80, 3482801), (112, 2487715), (140, 1990172), (280, 995086), (560, 497543), (647, 430640), (769, 362320), (1294, 215320), (1538, 181160), (2588, 107660), (3076, 90580), (3235, 86128), (3845, 72464), (4529, 61520), (5176, 53830), (5383, 51760), (6152, 45290), (6470, 43064), (7690, 36232), (9058, 30760), (10352, 26915), (10766, 25880), (12304, 22645), (12940, 21532), (15380, 18116)]