2445680

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1609}}^1$

素因数の和:1641

約数の個数: 40

約数和(自身を含む): 5989200

約数和(自身を除く): 3543520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 1609, 3218, 6436, 8045, 12872, 16090, 25744, 30571, 32180, 61142, 64360, 122284, 128720, 152855, 244568, 305710, 489136, 611420, 1222840, 2445680]

約数ペア:

[(1, 2445680), (2, 1222840), (4, 611420), (5, 489136), (8, 305710), (10, 244568), (16, 152855), (19, 128720), (20, 122284), (38, 64360), (40, 61142), (76, 32180), (80, 30571), (95, 25744), (152, 16090), (190, 12872), (304, 8045), (380, 6436), (760, 3218), (1520, 1609)]