19930988

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{397}}^1$

素因数の和:582

約数の個数: 48

約数和(自身を含む): 43862784

約数和(自身を除く): 23931796

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 163, 308, 326, 397, 652, 794, 1141, 1588, 1793, 2282, 2779, 3586, 4367, 4564, 5558, 7172, 8734, 11116, 12551, 17468, 25102, 30569, 50204, 61138, 64711, 122276, 129422, 258844, 452977, 711821, 905954, 1423642, 1811908, 2847284, 4982747, 9965494, 19930988]

約数ペア:

[(1, 19930988), (2, 9965494), (4, 4982747), (7, 2847284), (11, 1811908), (14, 1423642), (22, 905954), (28, 711821), (44, 452977), (77, 258844), (154, 129422), (163, 122276), (308, 64711), (326, 61138), (397, 50204), (652, 30569), (794, 25102), (1141, 17468), (1588, 12551), (1793, 11116), (2282, 8734), (2779, 7172), (3586, 5558), (4367, 4564)]