217963480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{25111}}^1$

素因数の和:25160

約数の個数: 64

約数和(自身を含む): 578580480

約数和(自身を除く): 360617000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 4340, 8680, 25111, 50222, 100444, 125555, 175777, 200888, 251110, 351554, 502220, 703108, 778441, 878885, 1004440, 1406216, 1556882, 1757770, 3113764, 3515540, 3892205, 5449087, 6227528, 7031080, 7784410, 10898174, 15568820, 21796348, 27245435, 31137640, 43592696, 54490870, 108981740, 217963480]

約数ペア:

[(1, 217963480), (2, 108981740), (4, 54490870), (5, 43592696), (7, 31137640), (8, 27245435), (10, 21796348), (14, 15568820), (20, 10898174), (28, 7784410), (31, 7031080), (35, 6227528), (40, 5449087), (56, 3892205), (62, 3515540), (70, 3113764), (124, 1757770), (140, 1556882), (155, 1406216), (217, 1004440), (248, 878885), (280, 778441), (310, 703108), (434, 502220), (620, 351554), (868, 251110), (1085, 200888), (1240, 175777), (1736, 125555), (2170, 100444), (4340, 50222), (8680, 25111)]