138015940

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{173}}^1\times {\mathrm{353}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 294921648

約数和(自身を除く): 156905708

約数列:

[1, 2, 4, 5, 10, 20, 113, 173, 226, 346, 353, 452, 565, 692, 706, 865, 1130, 1412, 1730, 1765, 2260, 3460, 3530, 7060, 19549, 39098, 39889, 61069, 78196, 79778, 97745, 122138, 159556, 195490, 199445, 244276, 305345, 390980, 398890, 610690, 797780, 1221380, 6900797, 13801594, 27603188, 34503985, 69007970, 138015940]

約数ペア:

[(1, 138015940), (2, 69007970), (4, 34503985), (5, 27603188), (10, 13801594), (20, 6900797), (113, 1221380), (173, 797780), (226, 610690), (346, 398890), (353, 390980), (452, 305345), (565, 244276), (692, 199445), (706, 195490), (865, 159556), (1130, 122138), (1412, 97745), (1730, 79778), (1765, 78196), (2260, 61069), (3460, 39889), (3530, 39098), (7060, 19549)]