80999920

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{131}}^2$

素因数の和:334

約数の個数: 60

約数和(自身を含む): 192989880

約数和(自身を除く): 111989960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 131, 236, 262, 295, 472, 524, 590, 655, 944, 1048, 1180, 1310, 2096, 2360, 2620, 4720, 5240, 7729, 10480, 15458, 17161, 30916, 34322, 38645, 61832, 68644, 77290, 85805, 123664, 137288, 154580, 171610, 274576, 309160, 343220, 618320, 686440, 1012499, 1372880, 2024998, 4049996, 5062495, 8099992, 10124990, 16199984, 20249980, 40499960, 80999920]

約数ペア:

[(1, 80999920), (2, 40499960), (4, 20249980), (5, 16199984), (8, 10124990), (10, 8099992), (16, 5062495), (20, 4049996), (40, 2024998), (59, 1372880), (80, 1012499), (118, 686440), (131, 618320), (236, 343220), (262, 309160), (295, 274576), (472, 171610), (524, 154580), (590, 137288), (655, 123664), (944, 85805), (1048, 77290), (1180, 68644), (1310, 61832), (2096, 38645), (2360, 34322), (2620, 30916), (4720, 17161), (5240, 15458), (7729, 10480)]