9990428

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 21369600

約数和(自身を除く): 11379172

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 89, 133, 178, 211, 266, 356, 422, 532, 623, 844, 1246, 1477, 1691, 2492, 2954, 3382, 4009, 5908, 6764, 8018, 11837, 16036, 18779, 23674, 28063, 37558, 47348, 56126, 75116, 112252, 131453, 262906, 356801, 525812, 713602, 1427204, 2497607, 4995214, 9990428]

約数ペア:

[(1, 9990428), (2, 4995214), (4, 2497607), (7, 1427204), (14, 713602), (19, 525812), (28, 356801), (38, 262906), (76, 131453), (89, 112252), (133, 75116), (178, 56126), (211, 47348), (266, 37558), (356, 28063), (422, 23674), (532, 18779), (623, 16036), (844, 11837), (1246, 8018), (1477, 6764), (1691, 5908), (2492, 4009), (2954, 3382)]