18447460

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{257}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 40353264

約数和(自身を除く): 21905804

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 97, 148, 185, 194, 257, 370, 388, 485, 514, 740, 970, 1028, 1285, 1940, 2570, 3589, 5140, 7178, 9509, 14356, 17945, 19018, 24929, 35890, 38036, 47545, 49858, 71780, 95090, 99716, 124645, 190180, 249290, 498580, 922373, 1844746, 3689492, 4611865, 9223730, 18447460]

約数ペア:

[(1, 18447460), (2, 9223730), (4, 4611865), (5, 3689492), (10, 1844746), (20, 922373), (37, 498580), (74, 249290), (97, 190180), (148, 124645), (185, 99716), (194, 95090), (257, 71780), (370, 49858), (388, 47545), (485, 38036), (514, 35890), (740, 24929), (970, 19018), (1028, 17945), (1285, 14356), (1940, 9509), (2570, 7178), (3589, 5140)]