19378480

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{61}}^1$

素因数の和:123

約数の個数: 120

約数和(自身を含む): 52724304

約数和(自身を除く): 33345824

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 38, 40, 44, 55, 61, 76, 80, 88, 95, 110, 122, 152, 176, 190, 209, 220, 244, 304, 305, 361, 380, 418, 440, 488, 610, 671, 722, 760, 836, 880, 976, 1045, 1159, 1220, 1342, 1444, 1520, 1672, 1805, 2090, 2318, 2440, 2684, 2888, 3344, 3355, 3610, 3971, 4180, 4636, 4880, 5368, 5776, 5795, 6710, 7220, 7942, 8360, 9272, 10736, 11590, 12749, 13420, 14440, 15884, 16720, 18544, 19855, 22021, 23180, 25498, 26840, 28880, 31768, 39710, 44042, 46360, 50996, 53680, 63536, 63745, 79420, 88084, 92720, 101992, 110105, 127490, 158840, 176168, 203984, 220210, 242231, 254980, 317680, 352336, 440420, 484462, 509960, 880840, 968924, 1019920, 1211155, 1761680, 1937848, 2422310, 3875696, 4844620, 9689240, 19378480]

約数ペア:

[(1, 19378480), (2, 9689240), (4, 4844620), (5, 3875696), (8, 2422310), (10, 1937848), (11, 1761680), (16, 1211155), (19, 1019920), (20, 968924), (22, 880840), (38, 509960), (40, 484462), (44, 440420), (55, 352336), (61, 317680), (76, 254980), (80, 242231), (88, 220210), (95, 203984), (110, 176168), (122, 158840), (152, 127490), (176, 110105), (190, 101992), (209, 92720), (220, 88084), (244, 79420), (304, 63745), (305, 63536), (361, 53680), (380, 50996), (418, 46360), (440, 44042), (488, 39710), (610, 31768), (671, 28880), (722, 26840), (760, 25498), (836, 23180), (880, 22021), (976, 19855), (1045, 18544), (1159, 16720), (1220, 15884), (1342, 14440), (1444, 13420), (1520, 12749), (1672, 11590), (1805, 10736), (2090, 9272), (2318, 8360), (2440, 7942), (2684, 7220), (2888, 6710), (3344, 5795), (3355, 5776), (3610, 5368), (3971, 4880), (4180, 4636)]