21932380

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{251}}^1\times {\mathrm{257}}^1$

素因数の和:534

約数の個数: 48

約数和(自身を含む): 49152096

約数和(自身を除く): 27219716

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 251, 257, 340, 502, 514, 1004, 1028, 1255, 1285, 2510, 2570, 4267, 4369, 5020, 5140, 8534, 8738, 17068, 17476, 21335, 21845, 42670, 43690, 64507, 85340, 87380, 129014, 258028, 322535, 645070, 1096619, 1290140, 2193238, 4386476, 5483095, 10966190, 21932380]

約数ペア:

[(1, 21932380), (2, 10966190), (4, 5483095), (5, 4386476), (10, 2193238), (17, 1290140), (20, 1096619), (34, 645070), (68, 322535), (85, 258028), (170, 129014), (251, 87380), (257, 85340), (340, 64507), (502, 43690), (514, 42670), (1004, 21845), (1028, 21335), (1255, 17476), (1285, 17068), (2510, 8738), (2570, 8534), (4267, 5140), (4369, 5020)]