80857980

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{21391}}^1$

素因数の和:21416

約数の個数: 96

約数和(自身を含む): 287508480

約数和(自身を除く): 206650500

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 252, 270, 315, 378, 420, 540, 630, 756, 945, 1260, 1890, 3780, 21391, 42782, 64173, 85564, 106955, 128346, 149737, 192519, 213910, 256692, 299474, 320865, 385038, 427820, 449211, 577557, 598948, 641730, 748685, 770076, 898422, 962595, 1155114, 1283460, 1347633, 1497370, 1796844, 1925190, 2246055, 2310228, 2695266, 2887785, 2994740, 3850380, 4042899, 4492110, 5390532, 5775570, 6738165, 8085798, 8984220, 11551140, 13476330, 16171596, 20214495, 26952660, 40428990, 80857980]

約数ペア:

[(1, 80857980), (2, 40428990), (3, 26952660), (4, 20214495), (5, 16171596), (6, 13476330), (7, 11551140), (9, 8984220), (10, 8085798), (12, 6738165), (14, 5775570), (15, 5390532), (18, 4492110), (20, 4042899), (21, 3850380), (27, 2994740), (28, 2887785), (30, 2695266), (35, 2310228), (36, 2246055), (42, 1925190), (45, 1796844), (54, 1497370), (60, 1347633), (63, 1283460), (70, 1155114), (84, 962595), (90, 898422), (105, 770076), (108, 748685), (126, 641730), (135, 598948), (140, 577557), (180, 449211), (189, 427820), (210, 385038), (252, 320865), (270, 299474), (315, 256692), (378, 213910), (420, 192519), (540, 149737), (630, 128346), (756, 106955), (945, 85564), (1260, 64173), (1890, 42782), (3780, 21391)]