690480980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{159097}}^1$

素因数の和:159144

約数の個数: 48

約数和(自身を含む): 1710621696

約数和(自身を除く): 1020140716

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, 159097, 318194, 636388, 795485, 1113679, 1590970, 2227358, 3181940, 4454716, 4932007, 5568395, 9864014, 11136790, 19728028, 22273580, 24660035, 34524049, 49320070, 69048098, 98640140, 138096196, 172620245, 345240490, 690480980]

約数ペア:

[(1, 690480980), (2, 345240490), (4, 172620245), (5, 138096196), (7, 98640140), (10, 69048098), (14, 49320070), (20, 34524049), (28, 24660035), (31, 22273580), (35, 19728028), (62, 11136790), (70, 9864014), (124, 5568395), (140, 4932007), (155, 4454716), (217, 3181940), (310, 2227358), (434, 1590970), (620, 1113679), (868, 795485), (1085, 636388), (2170, 318194), (4340, 159097)]