78248920

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1\times {\mathrm{137}}^1$

素因数の和:388

約数の個数: 64

約数和(自身を含む): 180338400

約数和(自身を除く): 102089480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 131, 137, 218, 262, 274, 436, 524, 545, 548, 655, 685, 872, 1048, 1090, 1096, 1310, 1370, 2180, 2620, 2740, 4360, 5240, 5480, 14279, 14933, 17947, 28558, 29866, 35894, 57116, 59732, 71395, 71788, 74665, 89735, 114232, 119464, 142790, 143576, 149330, 179470, 285580, 298660, 358940, 571160, 597320, 717880, 1956223, 3912446, 7824892, 9781115, 15649784, 19562230, 39124460, 78248920]

約数ペア:

[(1, 78248920), (2, 39124460), (4, 19562230), (5, 15649784), (8, 9781115), (10, 7824892), (20, 3912446), (40, 1956223), (109, 717880), (131, 597320), (137, 571160), (218, 358940), (262, 298660), (274, 285580), (436, 179470), (524, 149330), (545, 143576), (548, 142790), (655, 119464), (685, 114232), (872, 89735), (1048, 74665), (1090, 71788), (1096, 71395), (1310, 59732), (1370, 57116), (2180, 35894), (2620, 29866), (2740, 28558), (4360, 17947), (5240, 14933), (5480, 14279)]