38638940

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{179}}^1\times {\mathrm{251}}^1$

素因数の和:482

約数の個数: 48

約数和(自身を含む): 83825280

約数和(自身を除く): 45186340

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 179, 215, 251, 358, 430, 502, 716, 860, 895, 1004, 1255, 1790, 2510, 3580, 5020, 7697, 10793, 15394, 21586, 30788, 38485, 43172, 44929, 53965, 76970, 89858, 107930, 153940, 179716, 215860, 224645, 449290, 898580, 1931947, 3863894, 7727788, 9659735, 19319470, 38638940]

約数ペア:

[(1, 38638940), (2, 19319470), (4, 9659735), (5, 7727788), (10, 3863894), (20, 1931947), (43, 898580), (86, 449290), (172, 224645), (179, 215860), (215, 179716), (251, 153940), (358, 107930), (430, 89858), (502, 76970), (716, 53965), (860, 44929), (895, 43172), (1004, 38485), (1255, 30788), (1790, 21586), (2510, 15394), (3580, 10793), (5020, 7697)]