81901875

素因数分解:

$3^1\times 5^4\times {\mathrm{11}}^2\times {\mathrm{19}}^2$

素因数の和:83

約数の個数: 90

約数和(自身を含む): 158302452

約数和(自身を除く): 76400577

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, 625, 627, 825, 1045, 1083, 1375, 1425, 1805, 1815, 1875, 2299, 2375, 3025, 3135, 3971, 4125, 5225, 5415, 6875, 6897, 7125, 9025, 9075, 11495, 11875, 11913, 15125, 15675, 19855, 20625, 26125, 27075, 34485, 35625, 43681, 45125, 45375, 57475, 59565, 75625, 78375, 99275, 130625, 131043, 135375, 172425, 218405, 225625, 226875, 287375, 297825, 391875, 496375, 655215, 676875, 862125, 1092025, 1436875, 1489125, 2481875, 3276075, 4310625, 5460125, 7445625, 16380375, 27300625, 81901875]

約数ペア:

[(1, 81901875), (3, 27300625), (5, 16380375), (11, 7445625), (15, 5460125), (19, 4310625), (25, 3276075), (33, 2481875), (55, 1489125), (57, 1436875), (75, 1092025), (95, 862125), (121, 676875), (125, 655215), (165, 496375), (209, 391875), (275, 297825), (285, 287375), (361, 226875), (363, 225625), (375, 218405), (475, 172425), (605, 135375), (625, 131043), (627, 130625), (825, 99275), (1045, 78375), (1083, 75625), (1375, 59565), (1425, 57475), (1805, 45375), (1815, 45125), (1875, 43681), (2299, 35625), (2375, 34485), (3025, 27075), (3135, 26125), (3971, 20625), (4125, 19855), (5225, 15675), (5415, 15125), (6875, 11913), (6897, 11875), (7125, 11495), (9025, 9075)]