1320221025

素因数分解:

$3^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{21031}}^1$

素因数の和:21084

約数の個数: 60

約数和(自身を含む): 2524513024

約数和(自身を除く): 1204291999

約数列:

[1, 3, 5, 9, 15, 25, 27, 31, 45, 75, 81, 93, 135, 155, 225, 279, 405, 465, 675, 775, 837, 1395, 2025, 2325, 2511, 4185, 6975, 12555, 20925, 21031, 62775, 63093, 105155, 189279, 315465, 525775, 567837, 651961, 946395, 1577325, 1703511, 1955883, 2839185, 3259805, 4731975, 5867649, 8517555, 9779415, 14195925, 16299025, 17602947, 29338245, 42587775, 48897075, 52808841, 88014735, 146691225, 264044205, 440073675, 1320221025]

約数ペア:

[(1, 1320221025), (3, 440073675), (5, 264044205), (9, 146691225), (15, 88014735), (25, 52808841), (27, 48897075), (31, 42587775), (45, 29338245), (75, 17602947), (81, 16299025), (93, 14195925), (135, 9779415), (155, 8517555), (225, 5867649), (279, 4731975), (405, 3259805), (465, 2839185), (675, 1955883), (775, 1703511), (837, 1577325), (1395, 946395), (2025, 651961), (2325, 567837), (2511, 525775), (4185, 315465), (6975, 189279), (12555, 105155), (20925, 63093), (21031, 62775)]