80620280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{787}}^1$

素因数の和:1008

約数の個数: 64

約数和(自身を含む): 196590240

約数和(自身を除く): 115969960

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 197, 260, 394, 520, 787, 788, 985, 1574, 1576, 1970, 2561, 3148, 3935, 3940, 5122, 6296, 7870, 7880, 10231, 10244, 12805, 15740, 20462, 20488, 25610, 31480, 40924, 51155, 51220, 81848, 102310, 102440, 155039, 204620, 310078, 409240, 620156, 775195, 1240312, 1550390, 2015507, 3100780, 4031014, 6201560, 8062028, 10077535, 16124056, 20155070, 40310140, 80620280]

約数ペア:

[(1, 80620280), (2, 40310140), (4, 20155070), (5, 16124056), (8, 10077535), (10, 8062028), (13, 6201560), (20, 4031014), (26, 3100780), (40, 2015507), (52, 1550390), (65, 1240312), (104, 775195), (130, 620156), (197, 409240), (260, 310078), (394, 204620), (520, 155039), (787, 102440), (788, 102310), (985, 81848), (1574, 51220), (1576, 51155), (1970, 40924), (2561, 31480), (3148, 25610), (3935, 20488), (3940, 20462), (5122, 15740), (6296, 12805), (7870, 10244), (7880, 10231)]