128679990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{137}}^1\times {\mathrm{239}}^1$

素因数の和:517

約数の個数: 64

約数和(自身を含む): 314772480

約数和(自身を除く): 186092490

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 131, 137, 239, 262, 274, 393, 411, 478, 655, 685, 717, 786, 822, 1195, 1310, 1370, 1434, 1965, 2055, 2390, 3585, 3930, 4110, 7170, 17947, 31309, 32743, 35894, 53841, 62618, 65486, 89735, 93927, 98229, 107682, 156545, 163715, 179470, 187854, 196458, 269205, 313090, 327430, 469635, 491145, 538410, 939270, 982290, 4289333, 8578666, 12867999, 21446665, 25735998, 42893330, 64339995, 128679990]

約数ペア:

[(1, 128679990), (2, 64339995), (3, 42893330), (5, 25735998), (6, 21446665), (10, 12867999), (15, 8578666), (30, 4289333), (131, 982290), (137, 939270), (239, 538410), (262, 491145), (274, 469635), (393, 327430), (411, 313090), (478, 269205), (655, 196458), (685, 187854), (717, 179470), (786, 163715), (822, 156545), (1195, 107682), (1310, 98229), (1370, 93927), (1434, 89735), (1965, 65486), (2055, 62618), (2390, 53841), (3585, 35894), (3930, 32743), (4110, 31309), (7170, 17947)]