20159456

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{467}}^1$

素因数の和:567

約数の個数: 48

約数和(自身を含む): 42456960

約数和(自身を除く): 22297504

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 71, 76, 142, 152, 284, 304, 467, 568, 608, 934, 1136, 1349, 1868, 2272, 2698, 3736, 5396, 7472, 8873, 10792, 14944, 17746, 21584, 33157, 35492, 43168, 66314, 70984, 132628, 141968, 265256, 283936, 530512, 629983, 1061024, 1259966, 2519932, 5039864, 10079728, 20159456]

約数ペア:

[(1, 20159456), (2, 10079728), (4, 5039864), (8, 2519932), (16, 1259966), (19, 1061024), (32, 629983), (38, 530512), (71, 283936), (76, 265256), (142, 141968), (152, 132628), (284, 70984), (304, 66314), (467, 43168), (568, 35492), (608, 33157), (934, 21584), (1136, 17746), (1349, 14944), (1868, 10792), (2272, 8873), (2698, 7472), (3736, 5396)]