3980025

素因数分解:

$3^2\times 5^2\times 7^2\times {\mathrm{19}}^2$

素因数の和:68

約数の個数: 81

約数和(自身を含む): 8751951

約数和(自身を除く): 4771926

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 25, 35, 45, 49, 57, 63, 75, 95, 105, 133, 147, 171, 175, 225, 245, 285, 315, 361, 399, 441, 475, 525, 665, 735, 855, 931, 1083, 1197, 1225, 1425, 1575, 1805, 1995, 2205, 2527, 2793, 3249, 3325, 3675, 4275, 4655, 5415, 5985, 7581, 8379, 9025, 9975, 11025, 12635, 13965, 16245, 17689, 22743, 23275, 27075, 29925, 37905, 41895, 53067, 63175, 69825, 81225, 88445, 113715, 159201, 189525, 209475, 265335, 442225, 568575, 796005, 1326675, 3980025]

約数ペア:

[(1, 3980025), (3, 1326675), (5, 796005), (7, 568575), (9, 442225), (15, 265335), (19, 209475), (21, 189525), (25, 159201), (35, 113715), (45, 88445), (49, 81225), (57, 69825), (63, 63175), (75, 53067), (95, 41895), (105, 37905), (133, 29925), (147, 27075), (171, 23275), (175, 22743), (225, 17689), (245, 16245), (285, 13965), (315, 12635), (361, 11025), (399, 9975), (441, 9025), (475, 8379), (525, 7581), (665, 5985), (735, 5415), (855, 4655), (931, 4275), (1083, 3675), (1197, 3325), (1225, 3249), (1425, 2793), (1575, 2527), (1805, 2205)]