20150620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4643}}^1$

素因数の和:4690

約数の個数: 48

約数和(自身を含む): 49932288

約数和(自身を除く): 29781668

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 4643, 9286, 18572, 23215, 32501, 46430, 65002, 92860, 130004, 143933, 162505, 287866, 325010, 575732, 650020, 719665, 1007531, 1439330, 2015062, 2878660, 4030124, 5037655, 10075310, 20150620]

約数ペア:

[(1, 20150620), (2, 10075310), (4, 5037655), (5, 4030124), (7, 2878660), (10, 2015062), (14, 1439330), (20, 1007531), (28, 719665), (31, 650020), (35, 575732), (62, 325010), (70, 287866), (124, 162505), (140, 143933), (155, 130004), (217, 92860), (310, 65002), (434, 46430), (620, 32501), (868, 23215), (1085, 18572), (2170, 9286), (4340, 4643)]