20469080

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1171}}^1$

素因数の和:1224

約数の個数: 64

約数和(自身を含む): 50630400

約数和(自身を除く): 30161320

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 23, 38, 40, 46, 76, 92, 95, 115, 152, 184, 190, 230, 380, 437, 460, 760, 874, 920, 1171, 1748, 2185, 2342, 3496, 4370, 4684, 5855, 8740, 9368, 11710, 17480, 22249, 23420, 26933, 44498, 46840, 53866, 88996, 107732, 111245, 134665, 177992, 215464, 222490, 269330, 444980, 511727, 538660, 889960, 1023454, 1077320, 2046908, 2558635, 4093816, 5117270, 10234540, 20469080]

約数ペア:

[(1, 20469080), (2, 10234540), (4, 5117270), (5, 4093816), (8, 2558635), (10, 2046908), (19, 1077320), (20, 1023454), (23, 889960), (38, 538660), (40, 511727), (46, 444980), (76, 269330), (92, 222490), (95, 215464), (115, 177992), (152, 134665), (184, 111245), (190, 107732), (230, 88996), (380, 53866), (437, 46840), (460, 44498), (760, 26933), (874, 23420), (920, 22249), (1171, 17480), (1748, 11710), (2185, 9368), (2342, 8740), (3496, 5855), (4370, 4684)]