21030789

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:261

約数の個数: 32

約数和(自身を含む): 31328640

約数和(自身を除く): 10297851

約数列:

[1, 3, 13, 39, 73, 83, 89, 219, 249, 267, 949, 1079, 1157, 2847, 3237, 3471, 6059, 6497, 7387, 18177, 19491, 22161, 78767, 84461, 96031, 236301, 253383, 288093, 539251, 1617753, 7010263, 21030789]

約数ペア:

[(1, 21030789), (3, 7010263), (13, 1617753), (39, 539251), (73, 288093), (83, 253383), (89, 236301), (219, 96031), (249, 84461), (267, 78767), (949, 22161), (1079, 19491), (1157, 18177), (2847, 7387), (3237, 6497), (3471, 6059)]