78700180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{2777}}^1$

素因数の和:2908

約数の個数: 48

約数和(自身を含む): 179681040

約数和(自身を除く): 100980860

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 436, 545, 1090, 1417, 2180, 2777, 2834, 5554, 5668, 7085, 11108, 13885, 14170, 27770, 28340, 36101, 55540, 72202, 144404, 180505, 302693, 361010, 605386, 722020, 1210772, 1513465, 3026930, 3935009, 6053860, 7870018, 15740036, 19675045, 39350090, 78700180]

約数ペア:

[(1, 78700180), (2, 39350090), (4, 19675045), (5, 15740036), (10, 7870018), (13, 6053860), (20, 3935009), (26, 3026930), (52, 1513465), (65, 1210772), (109, 722020), (130, 605386), (218, 361010), (260, 302693), (436, 180505), (545, 144404), (1090, 72202), (1417, 55540), (2180, 36101), (2777, 28340), (2834, 27770), (5554, 14170), (5668, 13885), (7085, 11108)]