2140540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:202

約数の個数: 48

約数和(自身を含む): 4878720

約数和(自身を除く): 2738180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 76, 86, 95, 131, 172, 190, 215, 262, 380, 430, 524, 655, 817, 860, 1310, 1634, 2489, 2620, 3268, 4085, 4978, 5633, 8170, 9956, 11266, 12445, 16340, 22532, 24890, 28165, 49780, 56330, 107027, 112660, 214054, 428108, 535135, 1070270, 2140540]

約数ペア:

[(1, 2140540), (2, 1070270), (4, 535135), (5, 428108), (10, 214054), (19, 112660), (20, 107027), (38, 56330), (43, 49780), (76, 28165), (86, 24890), (95, 22532), (131, 16340), (172, 12445), (190, 11266), (215, 9956), (262, 8170), (380, 5633), (430, 4978), (524, 4085), (655, 3268), (817, 2620), (860, 2489), (1310, 1634)]