638981238

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{490769}}^1$

素因数の和:490812

約数の個数: 32

約数和(自身を含む): 1507645440

約数和(自身を除く): 868664202

約数列:

[1, 2, 3, 6, 7, 14, 21, 31, 42, 62, 93, 186, 217, 434, 651, 1302, 490769, 981538, 1472307, 2944614, 3435383, 6870766, 10306149, 15213839, 20612298, 30427678, 45641517, 91283034, 106496873, 212993746, 319490619, 638981238]

約数ペア:

[(1, 638981238), (2, 319490619), (3, 212993746), (6, 106496873), (7, 91283034), (14, 45641517), (21, 30427678), (31, 20612298), (42, 15213839), (62, 10306149), (93, 6870766), (186, 3435383), (217, 2944614), (434, 1472307), (651, 981538), (1302, 490769)]