20783884

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{41}}^2\times {\mathrm{281}}^1$

素因数の和:378

約数の個数: 36

約数和(自身を含む): 40814424

約数和(自身を除く): 20030540

約数列:

[1, 2, 4, 11, 22, 41, 44, 82, 164, 281, 451, 562, 902, 1124, 1681, 1804, 3091, 3362, 6182, 6724, 11521, 12364, 18491, 23042, 36982, 46084, 73964, 126731, 253462, 472361, 506924, 944722, 1889444, 5195971, 10391942, 20783884]

約数ペア:

[(1, 20783884), (2, 10391942), (4, 5195971), (11, 1889444), (22, 944722), (41, 506924), (44, 472361), (82, 253462), (164, 126731), (281, 73964), (451, 46084), (562, 36982), (902, 23042), (1124, 18491), (1681, 12364), (1804, 11521), (3091, 6724), (3362, 6182)]