25684280

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{353}}^1$

素因数の和:488

約数の個数: 64

約数和(自身を含む): 61935840

約数和(自身を除く): 36251560

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 107, 136, 170, 214, 340, 353, 428, 535, 680, 706, 856, 1070, 1412, 1765, 1819, 2140, 2824, 3530, 3638, 4280, 6001, 7060, 7276, 9095, 12002, 14120, 14552, 18190, 24004, 30005, 36380, 37771, 48008, 60010, 72760, 75542, 120020, 151084, 188855, 240040, 302168, 377710, 642107, 755420, 1284214, 1510840, 2568428, 3210535, 5136856, 6421070, 12842140, 25684280]

約数ペア:

[(1, 25684280), (2, 12842140), (4, 6421070), (5, 5136856), (8, 3210535), (10, 2568428), (17, 1510840), (20, 1284214), (34, 755420), (40, 642107), (68, 377710), (85, 302168), (107, 240040), (136, 188855), (170, 151084), (214, 120020), (340, 75542), (353, 72760), (428, 60010), (535, 48008), (680, 37771), (706, 36380), (856, 30005), (1070, 24004), (1412, 18190), (1765, 14552), (1819, 14120), (2140, 12002), (2824, 9095), (3530, 7276), (3638, 7060), (4280, 6001)]