18690140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{7853}}^1$

素因数の和:7886

約数の個数: 48

約数和(自身を含む): 47500992

約数和(自身を除く): 28810852

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 340, 476, 595, 1190, 2380, 7853, 15706, 31412, 39265, 54971, 78530, 109942, 133501, 157060, 219884, 267002, 274855, 534004, 549710, 667505, 934507, 1099420, 1335010, 1869014, 2670020, 3738028, 4672535, 9345070, 18690140]

約数ペア:

[(1, 18690140), (2, 9345070), (4, 4672535), (5, 3738028), (7, 2670020), (10, 1869014), (14, 1335010), (17, 1099420), (20, 934507), (28, 667505), (34, 549710), (35, 534004), (68, 274855), (70, 267002), (85, 219884), (119, 157060), (140, 133501), (170, 109942), (238, 78530), (340, 54971), (476, 39265), (595, 31412), (1190, 15706), (2380, 7853)]