20657637

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2293}}^1$

素因数の和:2330

約数の個数: 48

約数和(自身を含む): 40080768

約数和(自身を除く): 19423131

約数列:

[1, 3, 7, 9, 11, 13, 21, 33, 39, 63, 77, 91, 99, 117, 143, 231, 273, 429, 693, 819, 1001, 1287, 2293, 3003, 6879, 9009, 16051, 20637, 25223, 29809, 48153, 75669, 89427, 144459, 176561, 208663, 227007, 268281, 327899, 529683, 625989, 983697, 1589049, 1877967, 2295293, 2951091, 6885879, 20657637]

約数ペア:

[(1, 20657637), (3, 6885879), (7, 2951091), (9, 2295293), (11, 1877967), (13, 1589049), (21, 983697), (33, 625989), (39, 529683), (63, 327899), (77, 268281), (91, 227007), (99, 208663), (117, 176561), (143, 144459), (231, 89427), (273, 75669), (429, 48153), (693, 29809), (819, 25223), (1001, 20637), (1287, 16051), (2293, 9009), (3003, 6879)]