21651273

素因数分解:

$3^3\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1181}}^1$

素因数の和:1294

約数の個数: 32

約数和(自身を含む): 37067520

約数和(自身を除く): 15416247

約数列:

[1, 3, 7, 9, 21, 27, 63, 97, 189, 291, 679, 873, 1181, 2037, 2619, 3543, 6111, 8267, 10629, 18333, 24801, 31887, 74403, 114557, 223209, 343671, 801899, 1031013, 2405697, 3093039, 7217091, 21651273]

約数ペア:

[(1, 21651273), (3, 7217091), (7, 3093039), (9, 2405697), (21, 1031013), (27, 801899), (63, 343671), (97, 223209), (189, 114557), (291, 74403), (679, 31887), (873, 24801), (1181, 18333), (2037, 10629), (2619, 8267), (3543, 6111)]