80129920

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9631}}^1$

素因数の和:9663

約数の個数: 64

約数和(自身を含む): 206317440

約数和(自身を除く): 126187520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1664, 2080, 4160, 8320, 9631, 19262, 38524, 48155, 77048, 96310, 125203, 154096, 192620, 250406, 308192, 385240, 500812, 616384, 626015, 770480, 1001624, 1232768, 1252030, 1540960, 2003248, 2504060, 3081920, 4006496, 5008120, 6163840, 8012992, 10016240, 16025984, 20032480, 40064960, 80129920]

約数ペア:

[(1, 80129920), (2, 40064960), (4, 20032480), (5, 16025984), (8, 10016240), (10, 8012992), (13, 6163840), (16, 5008120), (20, 4006496), (26, 3081920), (32, 2504060), (40, 2003248), (52, 1540960), (64, 1252030), (65, 1232768), (80, 1001624), (104, 770480), (128, 626015), (130, 616384), (160, 500812), (208, 385240), (260, 308192), (320, 250406), (416, 192620), (520, 154096), (640, 125203), (832, 96310), (1040, 77048), (1664, 48155), (2080, 38524), (4160, 19262), (8320, 9631)]