21008100

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{239}}^1\times {\mathrm{293}}^1$

素因数の和:549

約数の個数: 72

約数和(自身を含む): 61246080

約数和(自身を除く): 40237980

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 150, 239, 293, 300, 478, 586, 717, 879, 956, 1172, 1195, 1434, 1465, 1758, 2390, 2868, 2930, 3516, 3585, 4395, 4780, 5860, 5975, 7170, 7325, 8790, 11950, 14340, 14650, 17580, 17925, 21975, 23900, 29300, 35850, 43950, 70027, 71700, 87900, 140054, 210081, 280108, 350135, 420162, 700270, 840324, 1050405, 1400540, 1750675, 2100810, 3501350, 4201620, 5252025, 7002700, 10504050, 21008100]

約数ペア:

[(1, 21008100), (2, 10504050), (3, 7002700), (4, 5252025), (5, 4201620), (6, 3501350), (10, 2100810), (12, 1750675), (15, 1400540), (20, 1050405), (25, 840324), (30, 700270), (50, 420162), (60, 350135), (75, 280108), (100, 210081), (150, 140054), (239, 87900), (293, 71700), (300, 70027), (478, 43950), (586, 35850), (717, 29300), (879, 23900), (956, 21975), (1172, 17925), (1195, 17580), (1434, 14650), (1465, 14340), (1758, 11950), (2390, 8790), (2868, 7325), (2930, 7170), (3516, 5975), (3585, 5860), (4395, 4780)]