854980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 2128896

約数和(自身を除く): 1273916

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 197, 217, 310, 394, 434, 620, 788, 868, 985, 1085, 1379, 1970, 2170, 2758, 3940, 4340, 5516, 6107, 6895, 12214, 13790, 24428, 27580, 30535, 42749, 61070, 85498, 122140, 170996, 213745, 427490, 854980]

約数ペア:

[(1, 854980), (2, 427490), (4, 213745), (5, 170996), (7, 122140), (10, 85498), (14, 61070), (20, 42749), (28, 30535), (31, 27580), (35, 24428), (62, 13790), (70, 12214), (124, 6895), (140, 6107), (155, 5516), (197, 4340), (217, 3940), (310, 2758), (394, 2170), (434, 1970), (620, 1379), (788, 1085), (868, 985)]