1687321980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{493369}}^1$

素因数の和:493403

約数の個数: 72

約数和(自身を含む): 5387600400

約数和(自身を除く): 3700278420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 493369, 986738, 1480107, 1973476, 2466845, 2960214, 4440321, 4933690, 5920428, 7400535, 8880642, 9374011, 9867380, 14801070, 17761284, 18748022, 22201605, 28122033, 29602140, 37496044, 44403210, 46870055, 56244066, 84366099, 88806420, 93740110, 112488132, 140610165, 168732198, 187480220, 281220330, 337464396, 421830495, 562440660, 843660990, 1687321980]

約数ペア:

[(1, 1687321980), (2, 843660990), (3, 562440660), (4, 421830495), (5, 337464396), (6, 281220330), (9, 187480220), (10, 168732198), (12, 140610165), (15, 112488132), (18, 93740110), (19, 88806420), (20, 84366099), (30, 56244066), (36, 46870055), (38, 44403210), (45, 37496044), (57, 29602140), (60, 28122033), (76, 22201605), (90, 18748022), (95, 17761284), (114, 14801070), (171, 9867380), (180, 9374011), (190, 8880642), (228, 7400535), (285, 5920428), (342, 4933690), (380, 4440321), (570, 2960214), (684, 2466845), (855, 1973476), (1140, 1480107), (1710, 986738), (3420, 493369)]