20873944

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{541}}^1$

素因数の和:620

約数の個数: 64

約数和(自身を含む): 49170240

約数和(自身を除く): 28296296

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 53, 56, 91, 104, 106, 182, 212, 364, 371, 424, 541, 689, 728, 742, 1082, 1378, 1484, 2164, 2756, 2968, 3787, 4328, 4823, 5512, 7033, 7574, 9646, 14066, 15148, 19292, 28132, 28673, 30296, 38584, 49231, 56264, 57346, 98462, 114692, 196924, 200711, 229384, 372749, 393848, 401422, 745498, 802844, 1490996, 1605688, 2609243, 2981992, 5218486, 10436972, 20873944]

約数ペア:

[(1, 20873944), (2, 10436972), (4, 5218486), (7, 2981992), (8, 2609243), (13, 1605688), (14, 1490996), (26, 802844), (28, 745498), (52, 401422), (53, 393848), (56, 372749), (91, 229384), (104, 200711), (106, 196924), (182, 114692), (212, 98462), (364, 57346), (371, 56264), (424, 49231), (541, 38584), (689, 30296), (728, 28673), (742, 28132), (1082, 19292), (1378, 15148), (1484, 14066), (2164, 9646), (2756, 7574), (2968, 7033), (3787, 5512), (4328, 4823)]