20893509

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{263}}^1$

素因数の和:386

約数の個数: 48

約数和(自身を含む): 37669632

約数和(自身を除く): 16776123

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 97, 117, 263, 273, 291, 679, 789, 819, 873, 1261, 1841, 2037, 2367, 3419, 3783, 5523, 6111, 8827, 10257, 11349, 16569, 23933, 25511, 26481, 30771, 71799, 76533, 79443, 178577, 215397, 229599, 331643, 535731, 994929, 1607193, 2321501, 2984787, 6964503, 20893509]

約数ペア:

[(1, 20893509), (3, 6964503), (7, 2984787), (9, 2321501), (13, 1607193), (21, 994929), (39, 535731), (63, 331643), (91, 229599), (97, 215397), (117, 178577), (263, 79443), (273, 76533), (291, 71799), (679, 30771), (789, 26481), (819, 25511), (873, 23933), (1261, 16569), (1841, 11349), (2037, 10257), (2367, 8827), (3419, 6111), (3783, 5523)]