20906472008

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{70139}}^1$

素因数の和:70254

約数の個数: 64

約数和(自身を含む): 43178184000

約数和(自身を除く): 22271711992

約数列:

[1, 2, 4, 8, 19, 37, 38, 53, 74, 76, 106, 148, 152, 212, 296, 424, 703, 1007, 1406, 1961, 2014, 2812, 3922, 4028, 5624, 7844, 8056, 15688, 37259, 70139, 74518, 140278, 149036, 280556, 298072, 561112, 1332641, 2595143, 2665282, 3717367, 5190286, 5330564, 7434734, 10380572, 10661128, 14869468, 20761144, 29738936, 49307717, 70629973, 98615434, 137542579, 141259946, 197230868, 275085158, 282519892, 394461736, 550170316, 565039784, 1100340632, 2613309001, 5226618002, 10453236004, 20906472008]

約数ペア:

[(1, 20906472008), (2, 10453236004), (4, 5226618002), (8, 2613309001), (19, 1100340632), (37, 565039784), (38, 550170316), (53, 394461736), (74, 282519892), (76, 275085158), (106, 197230868), (148, 141259946), (152, 137542579), (212, 98615434), (296, 70629973), (424, 49307717), (703, 29738936), (1007, 20761144), (1406, 14869468), (1961, 10661128), (2014, 10380572), (2812, 7434734), (3922, 5330564), (4028, 5190286), (5624, 3717367), (7844, 2665282), (8056, 2595143), (15688, 1332641), (37259, 561112), (70139, 298072), (74518, 280556), (140278, 149036)]