21711452

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1103}}^1$

素因数の和:1170

約数の個数: 48

約数和(自身を含む): 46986240

約数和(自身を除く): 25274788

約数列:

[1, 2, 4, 7, 14, 19, 28, 37, 38, 74, 76, 133, 148, 259, 266, 518, 532, 703, 1036, 1103, 1406, 2206, 2812, 4412, 4921, 7721, 9842, 15442, 19684, 20957, 30884, 40811, 41914, 81622, 83828, 146699, 163244, 285677, 293398, 571354, 586796, 775409, 1142708, 1550818, 3101636, 5427863, 10855726, 21711452]

約数ペア:

[(1, 21711452), (2, 10855726), (4, 5427863), (7, 3101636), (14, 1550818), (19, 1142708), (28, 775409), (37, 586796), (38, 571354), (74, 293398), (76, 285677), (133, 163244), (148, 146699), (259, 83828), (266, 81622), (518, 41914), (532, 40811), (703, 30884), (1036, 20957), (1103, 19684), (1406, 15442), (2206, 9842), (2812, 7721), (4412, 4921)]