40013890

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{643}}^1$

素因数の和:791

約数の個数: 48

約数和(自身を含む): 84575232

約数和(自身を除く): 44561342

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 127, 245, 254, 490, 635, 643, 889, 1270, 1286, 1778, 3215, 4445, 4501, 6223, 6430, 8890, 9002, 12446, 22505, 31115, 31507, 45010, 62230, 63014, 81661, 157535, 163322, 315070, 408305, 571627, 816610, 1143254, 2858135, 4001389, 5716270, 8002778, 20006945, 40013890]

約数ペア:

[(1, 40013890), (2, 20006945), (5, 8002778), (7, 5716270), (10, 4001389), (14, 2858135), (35, 1143254), (49, 816610), (70, 571627), (98, 408305), (127, 315070), (245, 163322), (254, 157535), (490, 81661), (635, 63014), (643, 62230), (889, 45010), (1270, 31507), (1286, 31115), (1778, 22505), (3215, 12446), (4445, 9002), (4501, 8890), (6223, 6430)]