2728780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{167}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 6209280

約数和(自身を除く): 3480500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 76, 86, 95, 167, 172, 190, 215, 334, 380, 430, 668, 817, 835, 860, 1634, 1670, 3173, 3268, 3340, 4085, 6346, 7181, 8170, 12692, 14362, 15865, 16340, 28724, 31730, 35905, 63460, 71810, 136439, 143620, 272878, 545756, 682195, 1364390, 2728780]

約数ペア:

[(1, 2728780), (2, 1364390), (4, 682195), (5, 545756), (10, 272878), (19, 143620), (20, 136439), (38, 71810), (43, 63460), (76, 35905), (86, 31730), (95, 28724), (167, 16340), (172, 15865), (190, 14362), (215, 12692), (334, 8170), (380, 7181), (430, 6346), (668, 4085), (817, 3340), (835, 3268), (860, 3173), (1634, 1670)]