21181370

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1$

素因数の和:315

約数の個数: 64

約数和(自身を含む): 46227456

約数和(自身を除く): 25046086

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 43, 62, 70, 86, 155, 215, 217, 227, 301, 310, 430, 434, 454, 602, 1085, 1135, 1333, 1505, 1589, 2170, 2270, 2666, 3010, 3178, 6665, 7037, 7945, 9331, 9761, 13330, 14074, 15890, 18662, 19522, 35185, 46655, 48805, 49259, 68327, 70370, 93310, 97610, 98518, 136654, 246295, 302591, 341635, 492590, 605182, 683270, 1512955, 2118137, 3025910, 4236274, 10590685, 21181370]

約数ペア:

[(1, 21181370), (2, 10590685), (5, 4236274), (7, 3025910), (10, 2118137), (14, 1512955), (31, 683270), (35, 605182), (43, 492590), (62, 341635), (70, 302591), (86, 246295), (155, 136654), (215, 98518), (217, 97610), (227, 93310), (301, 70370), (310, 68327), (430, 49259), (434, 48805), (454, 46655), (602, 35185), (1085, 19522), (1135, 18662), (1333, 15890), (1505, 14074), (1589, 13330), (2170, 9761), (2270, 9331), (2666, 7945), (3010, 7037), (3178, 6665)]