21127899

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1\times {\mathrm{107}}^1$

素因数の和:267

約数の個数: 32

約数和(自身を含む): 31497984

約数和(自身を除く): 10370085

約数列:

[1, 3, 13, 39, 61, 83, 107, 183, 249, 321, 793, 1079, 1391, 2379, 3237, 4173, 5063, 6527, 8881, 15189, 19581, 26643, 65819, 84851, 115453, 197457, 254553, 346359, 541741, 1625223, 7042633, 21127899]

約数ペア:

[(1, 21127899), (3, 7042633), (13, 1625223), (39, 541741), (61, 346359), (83, 254553), (107, 197457), (183, 115453), (249, 84851), (321, 65819), (793, 26643), (1079, 19581), (1391, 15189), (2379, 8881), (3237, 6527), (4173, 5063)]