20429760

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1637}}^1$

素因数の和:1670

約数の個数: 112

約数和(自身を含む): 69896736

約数和(自身を除く): 49466976

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 130, 156, 160, 192, 195, 208, 240, 260, 312, 320, 390, 416, 480, 520, 624, 780, 832, 960, 1040, 1248, 1560, 1637, 2080, 2496, 3120, 3274, 4160, 4911, 6240, 6548, 8185, 9822, 12480, 13096, 16370, 19644, 21281, 24555, 26192, 32740, 39288, 42562, 49110, 52384, 63843, 65480, 78576, 85124, 98220, 104768, 106405, 127686, 130960, 157152, 170248, 196440, 212810, 255372, 261920, 314304, 319215, 340496, 392880, 425620, 510744, 523840, 638430, 680992, 785760, 851240, 1021488, 1276860, 1361984, 1571520, 1702480, 2042976, 2553720, 3404960, 4085952, 5107440, 6809920, 10214880, 20429760]

約数ペア:

[(1, 20429760), (2, 10214880), (3, 6809920), (4, 5107440), (5, 4085952), (6, 3404960), (8, 2553720), (10, 2042976), (12, 1702480), (13, 1571520), (15, 1361984), (16, 1276860), (20, 1021488), (24, 851240), (26, 785760), (30, 680992), (32, 638430), (39, 523840), (40, 510744), (48, 425620), (52, 392880), (60, 340496), (64, 319215), (65, 314304), (78, 261920), (80, 255372), (96, 212810), (104, 196440), (120, 170248), (130, 157152), (156, 130960), (160, 127686), (192, 106405), (195, 104768), (208, 98220), (240, 85124), (260, 78576), (312, 65480), (320, 63843), (390, 52384), (416, 49110), (480, 42562), (520, 39288), (624, 32740), (780, 26192), (832, 24555), (960, 21281), (1040, 19644), (1248, 16370), (1560, 13096), (1637, 12480), (2080, 9822), (2496, 8185), (3120, 6548), (3274, 6240), (4160, 4911)]