81980548

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{173}}^1\times {\mathrm{701}}^1$

素因数の和:904

約数の個数: 36

約数和(自身を含む): 156471588

約数和(自身を除く): 74491040

約数列:

[1, 2, 4, 13, 26, 52, 169, 173, 338, 346, 676, 692, 701, 1402, 2249, 2804, 4498, 8996, 9113, 18226, 29237, 36452, 58474, 116948, 118469, 121273, 236938, 242546, 473876, 485092, 1576549, 3153098, 6306196, 20495137, 40990274, 81980548]

約数ペア:

[(1, 81980548), (2, 40990274), (4, 20495137), (13, 6306196), (26, 3153098), (52, 1576549), (169, 485092), (173, 473876), (338, 242546), (346, 236938), (676, 121273), (692, 118469), (701, 116948), (1402, 58474), (2249, 36452), (2804, 29237), (4498, 18226), (8996, 9113)]