21020868

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{487}}^1$

素因数の和:617

約数の個数: 72

約数和(自身を含む): 58618560

約数和(自身を除く): 37597692

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 109, 132, 198, 218, 327, 396, 436, 487, 654, 974, 981, 1199, 1308, 1461, 1948, 1962, 2398, 2922, 3597, 3924, 4383, 4796, 5357, 5844, 7194, 8766, 10714, 10791, 14388, 16071, 17532, 21428, 21582, 32142, 43164, 48213, 53083, 64284, 96426, 106166, 159249, 192852, 212332, 318498, 477747, 583913, 636996, 955494, 1167826, 1751739, 1910988, 2335652, 3503478, 5255217, 7006956, 10510434, 21020868]

約数ペア:

[(1, 21020868), (2, 10510434), (3, 7006956), (4, 5255217), (6, 3503478), (9, 2335652), (11, 1910988), (12, 1751739), (18, 1167826), (22, 955494), (33, 636996), (36, 583913), (44, 477747), (66, 318498), (99, 212332), (109, 192852), (132, 159249), (198, 106166), (218, 96426), (327, 64284), (396, 53083), (436, 48213), (487, 43164), (654, 32142), (974, 21582), (981, 21428), (1199, 17532), (1308, 16071), (1461, 14388), (1948, 10791), (1962, 10714), (2398, 8766), (2922, 7194), (3597, 5844), (3924, 5357), (4383, 4796)]