78638690

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{16349}}^1$

素因数の和:16406

約数の個数: 32

約数和(自身を含む): 156567600

約数和(自身を除く): 77928910

約数列:

[1, 2, 5, 10, 13, 26, 37, 65, 74, 130, 185, 370, 481, 962, 2405, 4810, 16349, 32698, 81745, 163490, 212537, 425074, 604913, 1062685, 1209826, 2125370, 3024565, 6049130, 7863869, 15727738, 39319345, 78638690]

約数ペア:

[(1, 78638690), (2, 39319345), (5, 15727738), (10, 7863869), (13, 6049130), (26, 3024565), (37, 2125370), (65, 1209826), (74, 1062685), (130, 604913), (185, 425074), (370, 212537), (481, 163490), (962, 81745), (2405, 32698), (4810, 16349)]