19919340

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{15809}}^1$

素因数の和:15831

約数の個数: 72

約数和(自身を含む): 69058080

約数和(自身を除く): 49138740

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 15809, 31618, 47427, 63236, 79045, 94854, 110663, 142281, 158090, 189708, 221326, 237135, 284562, 316180, 331989, 442652, 474270, 553315, 569124, 663978, 711405, 948540, 995967, 1106630, 1327956, 1422810, 1659945, 1991934, 2213260, 2845620, 3319890, 3983868, 4979835, 6639780, 9959670, 19919340]

約数ペア:

[(1, 19919340), (2, 9959670), (3, 6639780), (4, 4979835), (5, 3983868), (6, 3319890), (7, 2845620), (9, 2213260), (10, 1991934), (12, 1659945), (14, 1422810), (15, 1327956), (18, 1106630), (20, 995967), (21, 948540), (28, 711405), (30, 663978), (35, 569124), (36, 553315), (42, 474270), (45, 442652), (60, 331989), (63, 316180), (70, 284562), (84, 237135), (90, 221326), (105, 189708), (126, 158090), (140, 142281), (180, 110663), (210, 94854), (252, 79045), (315, 63236), (420, 47427), (630, 31618), (1260, 15809)]