21309240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{743}}^1$

素因数の和:996

約数の個数: 64

約数和(自身を含む): 64281600

約数和(自身を除く): 42972360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 239, 478, 717, 743, 956, 1195, 1434, 1486, 1912, 2229, 2390, 2868, 2972, 3585, 3715, 4458, 4780, 5736, 5944, 7170, 7430, 8916, 9560, 11145, 14340, 14860, 17832, 22290, 28680, 29720, 44580, 89160, 177577, 355154, 532731, 710308, 887885, 1065462, 1420616, 1775770, 2130924, 2663655, 3551540, 4261848, 5327310, 7103080, 10654620, 21309240]

約数ペア:

[(1, 21309240), (2, 10654620), (3, 7103080), (4, 5327310), (5, 4261848), (6, 3551540), (8, 2663655), (10, 2130924), (12, 1775770), (15, 1420616), (20, 1065462), (24, 887885), (30, 710308), (40, 532731), (60, 355154), (120, 177577), (239, 89160), (478, 44580), (717, 29720), (743, 28680), (956, 22290), (1195, 17832), (1434, 14860), (1486, 14340), (1912, 11145), (2229, 9560), (2390, 8916), (2868, 7430), (2972, 7170), (3585, 5944), (3715, 5736), (4458, 4780)]