16380375

素因数分解:

$3^1\times 5^3\times {\mathrm{11}}^2\times {\mathrm{19}}^2$

素因数の和:78

約数の個数: 72

約数和(自身を含む): 31619952

約数和(自身を除く): 15239577

約数列:

[1, 3, 5, 11, 15, 19, 25, 33, 55, 57, 75, 95, 121, 125, 165, 209, 275, 285, 361, 363, 375, 475, 605, 627, 825, 1045, 1083, 1375, 1425, 1805, 1815, 2299, 2375, 3025, 3135, 3971, 4125, 5225, 5415, 6897, 7125, 9025, 9075, 11495, 11913, 15125, 15675, 19855, 26125, 27075, 34485, 43681, 45125, 45375, 57475, 59565, 78375, 99275, 131043, 135375, 172425, 218405, 287375, 297825, 496375, 655215, 862125, 1092025, 1489125, 3276075, 5460125, 16380375]

約数ペア:

[(1, 16380375), (3, 5460125), (5, 3276075), (11, 1489125), (15, 1092025), (19, 862125), (25, 655215), (33, 496375), (55, 297825), (57, 287375), (75, 218405), (95, 172425), (121, 135375), (125, 131043), (165, 99275), (209, 78375), (275, 59565), (285, 57475), (361, 45375), (363, 45125), (375, 43681), (475, 34485), (605, 27075), (627, 26125), (825, 19855), (1045, 15675), (1083, 15125), (1375, 11913), (1425, 11495), (1805, 9075), (1815, 9025), (2299, 7125), (2375, 6897), (3025, 5415), (3135, 5225), (3971, 4125)]