81629320

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{5653}}^1$

素因数の和:5702

約数の個数: 48

約数和(自身を含む): 193875660

約数和(自身を除く): 112246340

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 361, 380, 722, 760, 1444, 1805, 2888, 3610, 5653, 7220, 11306, 14440, 22612, 28265, 45224, 56530, 107407, 113060, 214814, 226120, 429628, 537035, 859256, 1074070, 2040733, 2148140, 4081466, 4296280, 8162932, 10203665, 16325864, 20407330, 40814660, 81629320]

約数ペア:

[(1, 81629320), (2, 40814660), (4, 20407330), (5, 16325864), (8, 10203665), (10, 8162932), (19, 4296280), (20, 4081466), (38, 2148140), (40, 2040733), (76, 1074070), (95, 859256), (152, 537035), (190, 429628), (361, 226120), (380, 214814), (722, 113060), (760, 107407), (1444, 56530), (1805, 45224), (2888, 28265), (3610, 22612), (5653, 14440), (7220, 11306)]