20648979

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{661}}^1$

素因数の和:772

約数の個数: 32

約数和(自身を含む): 33364800

約数和(自身を除く): 12715821

約数列:

[1, 3, 9, 13, 27, 39, 89, 117, 267, 351, 661, 801, 1157, 1983, 2403, 3471, 5949, 8593, 10413, 17847, 25779, 31239, 58829, 77337, 176487, 232011, 529461, 764777, 1588383, 2294331, 6882993, 20648979]

約数ペア:

[(1, 20648979), (3, 6882993), (9, 2294331), (13, 1588383), (27, 764777), (39, 529461), (89, 232011), (117, 176487), (267, 77337), (351, 58829), (661, 31239), (801, 25779), (1157, 17847), (1983, 10413), (2403, 8593), (3471, 5949)]