18711004

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{89}}^1\times {\mathrm{311}}^1$

素因数の和:430

約数の個数: 36

約数和(自身を含む): 35970480

約数和(自身を除く): 17259476

約数列:

[1, 2, 4, 13, 26, 52, 89, 169, 178, 311, 338, 356, 622, 676, 1157, 1244, 2314, 4043, 4628, 8086, 15041, 16172, 27679, 30082, 52559, 55358, 60164, 105118, 110716, 210236, 359827, 719654, 1439308, 4677751, 9355502, 18711004]

約数ペア:

[(1, 18711004), (2, 9355502), (4, 4677751), (13, 1439308), (26, 719654), (52, 359827), (89, 210236), (169, 110716), (178, 105118), (311, 60164), (338, 55358), (356, 52559), (622, 30082), (676, 27679), (1157, 16172), (1244, 15041), (2314, 8086), (4043, 4628)]