15981318

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{563}}^1$

素因数の和:673

約数の個数: 48

約数和(自身を含む): 36953280

約数和(自身を除く): 20971962

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 57, 83, 114, 166, 171, 249, 342, 498, 563, 747, 1126, 1494, 1577, 1689, 3154, 3378, 4731, 5067, 9462, 10134, 10697, 14193, 21394, 28386, 32091, 46729, 64182, 93458, 96273, 140187, 192546, 280374, 420561, 841122, 887851, 1775702, 2663553, 5327106, 7990659, 15981318]

約数ペア:

[(1, 15981318), (2, 7990659), (3, 5327106), (6, 2663553), (9, 1775702), (18, 887851), (19, 841122), (38, 420561), (57, 280374), (83, 192546), (114, 140187), (166, 96273), (171, 93458), (249, 64182), (342, 46729), (498, 32091), (563, 28386), (747, 21394), (1126, 14193), (1494, 10697), (1577, 10134), (1689, 9462), (3154, 5067), (3378, 4731)]