21367990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{229}}^1$

素因数の和:317

約数の個数: 64

約数和(自身を含む): 46632960

約数和(自身を除く): 25264970

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 43, 62, 70, 86, 155, 215, 217, 229, 301, 310, 430, 434, 458, 602, 1085, 1145, 1333, 1505, 1603, 2170, 2290, 2666, 3010, 3206, 6665, 7099, 8015, 9331, 9847, 13330, 14198, 16030, 18662, 19694, 35495, 46655, 49235, 49693, 68929, 70990, 93310, 98470, 99386, 137858, 248465, 305257, 344645, 496930, 610514, 689290, 1526285, 2136799, 3052570, 4273598, 10683995, 21367990]

約数ペア:

[(1, 21367990), (2, 10683995), (5, 4273598), (7, 3052570), (10, 2136799), (14, 1526285), (31, 689290), (35, 610514), (43, 496930), (62, 344645), (70, 305257), (86, 248465), (155, 137858), (215, 99386), (217, 98470), (229, 93310), (301, 70990), (310, 68929), (430, 49693), (434, 49235), (458, 46655), (602, 35495), (1085, 19694), (1145, 18662), (1333, 16030), (1505, 14198), (1603, 13330), (2170, 9847), (2290, 9331), (2666, 8015), (3010, 7099), (3206, 6665)]