19813660

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{331}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 43337952

約数和(自身を除く): 23524292

約数列:

[1, 2, 4, 5, 10, 20, 41, 73, 82, 146, 164, 205, 292, 331, 365, 410, 662, 730, 820, 1324, 1460, 1655, 2993, 3310, 5986, 6620, 11972, 13571, 14965, 24163, 27142, 29930, 48326, 54284, 59860, 67855, 96652, 120815, 135710, 241630, 271420, 483260, 990683, 1981366, 3962732, 4953415, 9906830, 19813660]

約数ペア:

[(1, 19813660), (2, 9906830), (4, 4953415), (5, 3962732), (10, 1981366), (20, 990683), (41, 483260), (73, 271420), (82, 241630), (146, 135710), (164, 120815), (205, 96652), (292, 67855), (331, 59860), (365, 54284), (410, 48326), (662, 29930), (730, 27142), (820, 24163), (1324, 14965), (1460, 13571), (1655, 11972), (2993, 6620), (3310, 5986)]