28147700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{509}}^1$

素因数の和:609

約数の個数: 72

約数和(自身を含む): 70828800

約数和(自身を除く): 42681100

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 79, 100, 140, 158, 175, 316, 350, 395, 509, 553, 700, 790, 1018, 1106, 1580, 1975, 2036, 2212, 2545, 2765, 3563, 3950, 5090, 5530, 7126, 7900, 10180, 11060, 12725, 13825, 14252, 17815, 25450, 27650, 35630, 40211, 50900, 55300, 71260, 80422, 89075, 160844, 178150, 201055, 281477, 356300, 402110, 562954, 804220, 1005275, 1125908, 1407385, 2010550, 2814770, 4021100, 5629540, 7036925, 14073850, 28147700]

約数ペア:

[(1, 28147700), (2, 14073850), (4, 7036925), (5, 5629540), (7, 4021100), (10, 2814770), (14, 2010550), (20, 1407385), (25, 1125908), (28, 1005275), (35, 804220), (50, 562954), (70, 402110), (79, 356300), (100, 281477), (140, 201055), (158, 178150), (175, 160844), (316, 89075), (350, 80422), (395, 71260), (509, 55300), (553, 50900), (700, 40211), (790, 35630), (1018, 27650), (1106, 25450), (1580, 17815), (1975, 14252), (2036, 13825), (2212, 12725), (2545, 11060), (2765, 10180), (3563, 7900), (3950, 7126), (5090, 5530)]