90821120

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2729}}^1$

素因数の和:2765

約数の個数: 80

約数和(自身を含む): 234594360

約数和(自身を除く): 143773240

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 512, 520, 640, 832, 1040, 1280, 1664, 2080, 2560, 2729, 3328, 4160, 5458, 6656, 8320, 10916, 13645, 16640, 21832, 27290, 33280, 35477, 43664, 54580, 70954, 87328, 109160, 141908, 174656, 177385, 218320, 283816, 349312, 354770, 436640, 567632, 698624, 709540, 873280, 1135264, 1397248, 1419080, 1746560, 2270528, 2838160, 3493120, 4541056, 5676320, 6986240, 9082112, 11352640, 18164224, 22705280, 45410560, 90821120]

約数ペア:

[(1, 90821120), (2, 45410560), (4, 22705280), (5, 18164224), (8, 11352640), (10, 9082112), (13, 6986240), (16, 5676320), (20, 4541056), (26, 3493120), (32, 2838160), (40, 2270528), (52, 1746560), (64, 1419080), (65, 1397248), (80, 1135264), (104, 873280), (128, 709540), (130, 698624), (160, 567632), (208, 436640), (256, 354770), (260, 349312), (320, 283816), (416, 218320), (512, 177385), (520, 174656), (640, 141908), (832, 109160), (1040, 87328), (1280, 70954), (1664, 54580), (2080, 43664), (2560, 35477), (2729, 33280), (3328, 27290), (4160, 21832), (5458, 16640), (6656, 13645), (8320, 10916)]