28789040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{509}}^1$

素因数の和:630

約数の個数: 80

約数和(自身を含む): 77405760

約数和(自身を除く): 48616720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 101, 112, 140, 202, 280, 404, 505, 509, 560, 707, 808, 1010, 1018, 1414, 1616, 2020, 2036, 2545, 2828, 3535, 3563, 4040, 4072, 5090, 5656, 7070, 7126, 8080, 8144, 10180, 11312, 14140, 14252, 17815, 20360, 28280, 28504, 35630, 40720, 51409, 56560, 57008, 71260, 102818, 142520, 205636, 257045, 285040, 359863, 411272, 514090, 719726, 822544, 1028180, 1439452, 1799315, 2056360, 2878904, 3598630, 4112720, 5757808, 7197260, 14394520, 28789040]

約数ペア:

[(1, 28789040), (2, 14394520), (4, 7197260), (5, 5757808), (7, 4112720), (8, 3598630), (10, 2878904), (14, 2056360), (16, 1799315), (20, 1439452), (28, 1028180), (35, 822544), (40, 719726), (56, 514090), (70, 411272), (80, 359863), (101, 285040), (112, 257045), (140, 205636), (202, 142520), (280, 102818), (404, 71260), (505, 57008), (509, 56560), (560, 51409), (707, 40720), (808, 35630), (1010, 28504), (1018, 28280), (1414, 20360), (1616, 17815), (2020, 14252), (2036, 14140), (2545, 11312), (2828, 10180), (3535, 8144), (3563, 8080), (4040, 7126), (4072, 7070), (5090, 5656)]