20171344

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{317}}^1$

素因数の和:463

約数の個数: 40

約数和(自身を含む): 40575528

約数和(自身を除く): 20404184

約数列:

[1, 2, 4, 8, 16, 41, 82, 97, 164, 194, 317, 328, 388, 634, 656, 776, 1268, 1552, 2536, 3977, 5072, 7954, 12997, 15908, 25994, 30749, 31816, 51988, 61498, 63632, 103976, 122996, 207952, 245992, 491984, 1260709, 2521418, 5042836, 10085672, 20171344]

約数ペア:

[(1, 20171344), (2, 10085672), (4, 5042836), (8, 2521418), (16, 1260709), (41, 491984), (82, 245992), (97, 207952), (164, 122996), (194, 103976), (317, 63632), (328, 61498), (388, 51988), (634, 31816), (656, 30749), (776, 25994), (1268, 15908), (1552, 12997), (2536, 7954), (3977, 5072)]