20313124

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{151}}^1\times {\mathrm{199}}^1$

素因数の和:380

約数の個数: 36

約数和(自身を含む): 38942400

約数和(自身を除く): 18629276

約数列:

[1, 2, 4, 13, 26, 52, 151, 169, 199, 302, 338, 398, 604, 676, 796, 1963, 2587, 3926, 5174, 7852, 10348, 25519, 30049, 33631, 51038, 60098, 67262, 102076, 120196, 134524, 390637, 781274, 1562548, 5078281, 10156562, 20313124]

約数ペア:

[(1, 20313124), (2, 10156562), (4, 5078281), (13, 1562548), (26, 781274), (52, 390637), (151, 134524), (169, 120196), (199, 102076), (302, 67262), (338, 60098), (398, 51038), (604, 33631), (676, 30049), (796, 25519), (1963, 10348), (2587, 7852), (3926, 5174)]