38844940

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 83613600

約数和(自身を除く): 44768660

約数列:

[1, 2, 4, 5, 10, 20, 89, 139, 157, 178, 278, 314, 356, 445, 556, 628, 695, 785, 890, 1390, 1570, 1780, 2780, 3140, 12371, 13973, 21823, 24742, 27946, 43646, 49484, 55892, 61855, 69865, 87292, 109115, 123710, 139730, 218230, 247420, 279460, 436460, 1942247, 3884494, 7768988, 9711235, 19422470, 38844940]

約数ペア:

[(1, 38844940), (2, 19422470), (4, 9711235), (5, 7768988), (10, 3884494), (20, 1942247), (89, 436460), (139, 279460), (157, 247420), (178, 218230), (278, 139730), (314, 123710), (356, 109115), (445, 87292), (556, 69865), (628, 61855), (695, 55892), (785, 49484), (890, 43646), (1390, 27946), (1570, 24742), (1780, 21823), (2780, 13973), (3140, 12371)]