20435840

素因数分解:

$2^7\times 5^1\times {\mathrm{37}}^1\times {\mathrm{863}}^1$

素因数の和:919

約数の個数: 64

約数和(自身を含む): 50232960

約数和(自身を除く): 29797120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 128, 148, 160, 185, 296, 320, 370, 592, 640, 740, 863, 1184, 1480, 1726, 2368, 2960, 3452, 4315, 4736, 5920, 6904, 8630, 11840, 13808, 17260, 23680, 27616, 31931, 34520, 55232, 63862, 69040, 110464, 127724, 138080, 159655, 255448, 276160, 319310, 510896, 552320, 638620, 1021792, 1277240, 2043584, 2554480, 4087168, 5108960, 10217920, 20435840]

約数ペア:

[(1, 20435840), (2, 10217920), (4, 5108960), (5, 4087168), (8, 2554480), (10, 2043584), (16, 1277240), (20, 1021792), (32, 638620), (37, 552320), (40, 510896), (64, 319310), (74, 276160), (80, 255448), (128, 159655), (148, 138080), (160, 127724), (185, 110464), (296, 69040), (320, 63862), (370, 55232), (592, 34520), (640, 31931), (740, 27616), (863, 23680), (1184, 17260), (1480, 13808), (1726, 11840), (2368, 8630), (2960, 6904), (3452, 5920), (4315, 4736)]