890240

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1$

素因数の和:139

約数の個数: 64

約数和(自身を含む): 2313360

約数和(自身を除く): 1423120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 107, 128, 130, 160, 208, 214, 260, 320, 416, 428, 520, 535, 640, 832, 856, 1040, 1070, 1391, 1664, 1712, 2080, 2140, 2782, 3424, 4160, 4280, 5564, 6848, 6955, 8320, 8560, 11128, 13696, 13910, 17120, 22256, 27820, 34240, 44512, 55640, 68480, 89024, 111280, 178048, 222560, 445120, 890240]

約数ペア:

[(1, 890240), (2, 445120), (4, 222560), (5, 178048), (8, 111280), (10, 89024), (13, 68480), (16, 55640), (20, 44512), (26, 34240), (32, 27820), (40, 22256), (52, 17120), (64, 13910), (65, 13696), (80, 11128), (104, 8560), (107, 8320), (128, 6955), (130, 6848), (160, 5564), (208, 4280), (214, 4160), (260, 3424), (320, 2782), (416, 2140), (428, 2080), (520, 1712), (535, 1664), (640, 1391), (832, 1070), (856, 1040)]