18288788

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{179}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 38102400

約数和(自身を除く): 19813612

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 89, 164, 178, 179, 287, 356, 358, 574, 623, 716, 1148, 1246, 1253, 2492, 2506, 3649, 5012, 7298, 7339, 14596, 14678, 15931, 25543, 29356, 31862, 51086, 51373, 63724, 102172, 102746, 111517, 205492, 223034, 446068, 653171, 1306342, 2612684, 4572197, 9144394, 18288788]

約数ペア:

[(1, 18288788), (2, 9144394), (4, 4572197), (7, 2612684), (14, 1306342), (28, 653171), (41, 446068), (82, 223034), (89, 205492), (164, 111517), (178, 102746), (179, 102172), (287, 63724), (356, 51373), (358, 51086), (574, 31862), (623, 29356), (716, 25543), (1148, 15931), (1246, 14678), (1253, 14596), (2492, 7339), (2506, 7298), (3649, 5012)]