28512680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1289}}^1$

素因数の和:1386

約数の個数: 64

約数和(自身を含む): 74304000

約数和(自身を除く): 45791320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 79, 140, 158, 280, 316, 395, 553, 632, 790, 1106, 1289, 1580, 2212, 2578, 2765, 3160, 4424, 5156, 5530, 6445, 9023, 10312, 11060, 12890, 18046, 22120, 25780, 36092, 45115, 51560, 72184, 90230, 101831, 180460, 203662, 360920, 407324, 509155, 712817, 814648, 1018310, 1425634, 2036620, 2851268, 3564085, 4073240, 5702536, 7128170, 14256340, 28512680]

約数ペア:

[(1, 28512680), (2, 14256340), (4, 7128170), (5, 5702536), (7, 4073240), (8, 3564085), (10, 2851268), (14, 2036620), (20, 1425634), (28, 1018310), (35, 814648), (40, 712817), (56, 509155), (70, 407324), (79, 360920), (140, 203662), (158, 180460), (280, 101831), (316, 90230), (395, 72184), (553, 51560), (632, 45115), (790, 36092), (1106, 25780), (1289, 22120), (1580, 18046), (2212, 12890), (2578, 11060), (2765, 10312), (3160, 9023), (4424, 6445), (5156, 5530)]