251917656

素因数分解:

$2^3\times 3^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:381

約数の個数: 128

約数和(自身を含む): 696729600

約数和(自身を除く): 444811944

約数列:

[1, 2, 3, 4, 6, 8, 12, 19, 24, 31, 38, 57, 62, 71, 76, 93, 114, 124, 142, 152, 186, 213, 228, 248, 251, 284, 372, 426, 456, 502, 568, 589, 744, 753, 852, 1004, 1178, 1349, 1506, 1704, 1767, 2008, 2201, 2356, 2698, 3012, 3534, 4047, 4402, 4712, 4769, 5396, 6024, 6603, 7068, 7781, 8094, 8804, 9538, 10792, 13206, 14136, 14307, 15562, 16188, 17608, 17821, 19076, 23343, 26412, 28614, 31124, 32376, 35642, 38152, 41819, 46686, 52824, 53463, 57228, 62248, 71284, 83638, 93372, 106926, 114456, 125457, 142568, 147839, 167276, 186744, 213852, 250914, 295678, 334552, 338599, 427704, 443517, 501828, 552451, 591356, 677198, 887034, 1003656, 1015797, 1104902, 1182712, 1354396, 1657353, 1774068, 2031594, 2209804, 2708792, 3314706, 3548136, 4063188, 4419608, 6629412, 8126376, 10496569, 13258824, 20993138, 31489707, 41986276, 62979414, 83972552, 125958828, 251917656]

約数ペア:

[(1, 251917656), (2, 125958828), (3, 83972552), (4, 62979414), (6, 41986276), (8, 31489707), (12, 20993138), (19, 13258824), (24, 10496569), (31, 8126376), (38, 6629412), (57, 4419608), (62, 4063188), (71, 3548136), (76, 3314706), (93, 2708792), (114, 2209804), (124, 2031594), (142, 1774068), (152, 1657353), (186, 1354396), (213, 1182712), (228, 1104902), (248, 1015797), (251, 1003656), (284, 887034), (372, 677198), (426, 591356), (456, 552451), (502, 501828), (568, 443517), (589, 427704), (744, 338599), (753, 334552), (852, 295678), (1004, 250914), (1178, 213852), (1349, 186744), (1506, 167276), (1704, 147839), (1767, 142568), (2008, 125457), (2201, 114456), (2356, 106926), (2698, 93372), (3012, 83638), (3534, 71284), (4047, 62248), (4402, 57228), (4712, 53463), (4769, 52824), (5396, 46686), (6024, 41819), (6603, 38152), (7068, 35642), (7781, 32376), (8094, 31124), (8804, 28614), (9538, 26412), (10792, 23343), (13206, 19076), (14136, 17821), (14307, 17608), (15562, 16188)]