21311570

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:136

約数の個数: 96

約数和(自身を含む): 48854016

約数和(自身を除く): 27542446

約数列:

[1, 2, 5, 7, 10, 14, 23, 31, 35, 46, 49, 61, 62, 70, 98, 115, 122, 155, 161, 217, 230, 245, 305, 310, 322, 427, 434, 490, 610, 713, 805, 854, 1085, 1127, 1403, 1426, 1519, 1610, 1891, 2135, 2170, 2254, 2806, 2989, 3038, 3565, 3782, 4270, 4991, 5635, 5978, 7015, 7130, 7595, 9455, 9821, 9982, 11270, 13237, 14030, 14945, 15190, 18910, 19642, 24955, 26474, 29890, 34937, 43493, 49105, 49910, 66185, 68747, 69874, 86986, 92659, 98210, 132370, 137494, 174685, 185318, 217465, 304451, 343735, 349370, 434930, 463295, 608902, 687470, 926590, 1522255, 2131157, 3044510, 4262314, 10655785, 21311570]

約数ペア:

[(1, 21311570), (2, 10655785), (5, 4262314), (7, 3044510), (10, 2131157), (14, 1522255), (23, 926590), (31, 687470), (35, 608902), (46, 463295), (49, 434930), (61, 349370), (62, 343735), (70, 304451), (98, 217465), (115, 185318), (122, 174685), (155, 137494), (161, 132370), (217, 98210), (230, 92659), (245, 86986), (305, 69874), (310, 68747), (322, 66185), (427, 49910), (434, 49105), (490, 43493), (610, 34937), (713, 29890), (805, 26474), (854, 24955), (1085, 19642), (1127, 18910), (1403, 15190), (1426, 14945), (1519, 14030), (1610, 13237), (1891, 11270), (2135, 9982), (2170, 9821), (2254, 9455), (2806, 7595), (2989, 7130), (3038, 7015), (3565, 5978), (3782, 5635), (4270, 4991)]