1388890160

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{2480161}}^1$

素因数の和:2480181

約数の個数: 40

約数和(自身を含む): 3690481056

約数和(自身を除く): 2301590896

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 2480161, 4960322, 9920644, 12400805, 17361127, 19841288, 24801610, 34722254, 39682576, 49603220, 69444508, 86805635, 99206440, 138889016, 173611270, 198412880, 277778032, 347222540, 694445080, 1388890160]

約数ペア:

[(1, 1388890160), (2, 694445080), (4, 347222540), (5, 277778032), (7, 198412880), (8, 173611270), (10, 138889016), (14, 99206440), (16, 86805635), (20, 69444508), (28, 49603220), (35, 39682576), (40, 34722254), (56, 24801610), (70, 19841288), (80, 17361127), (112, 12400805), (140, 9920644), (280, 4960322), (560, 2480161)]