61280920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{227}}^1\times {\mathrm{397}}^1$

素因数の和:652

約数の個数: 64

約数和(自身を含む): 147005280

約数和(自身を除く): 85724360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 227, 340, 397, 454, 680, 794, 908, 1135, 1588, 1816, 1985, 2270, 3176, 3859, 3970, 4540, 6749, 7718, 7940, 9080, 13498, 15436, 15880, 19295, 26996, 30872, 33745, 38590, 53992, 67490, 77180, 90119, 134980, 154360, 180238, 269960, 360476, 450595, 720952, 901190, 1532023, 1802380, 3064046, 3604760, 6128092, 7660115, 12256184, 15320230, 30640460, 61280920]

約数ペア:

[(1, 61280920), (2, 30640460), (4, 15320230), (5, 12256184), (8, 7660115), (10, 6128092), (17, 3604760), (20, 3064046), (34, 1802380), (40, 1532023), (68, 901190), (85, 720952), (136, 450595), (170, 360476), (227, 269960), (340, 180238), (397, 154360), (454, 134980), (680, 90119), (794, 77180), (908, 67490), (1135, 53992), (1588, 38590), (1816, 33745), (1985, 30872), (2270, 26996), (3176, 19295), (3859, 15880), (3970, 15436), (4540, 13498), (6749, 9080), (7718, 7940)]