319280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1$

素因数の和:333

約数の個数: 40

約数和(自身を含む): 802032

約数和(自身を除く): 482752

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 307, 520, 614, 1040, 1228, 1535, 2456, 3070, 3991, 4912, 6140, 7982, 12280, 15964, 19955, 24560, 31928, 39910, 63856, 79820, 159640, 319280]

約数ペア:

[(1, 319280), (2, 159640), (4, 79820), (5, 63856), (8, 39910), (10, 31928), (13, 24560), (16, 19955), (20, 15964), (26, 12280), (40, 7982), (52, 6140), (65, 4912), (80, 3991), (104, 3070), (130, 2456), (208, 1535), (260, 1228), (307, 1040), (520, 614)]