71398420

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{193}}^1\times {\mathrm{349}}^1$

素因数の和:604

約数の個数: 48

約数和(自身を含む): 153997200

約数和(自身を除く): 82598780

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 193, 212, 265, 349, 386, 530, 698, 772, 965, 1060, 1396, 1745, 1930, 3490, 3860, 6980, 10229, 18497, 20458, 36994, 40916, 51145, 67357, 73988, 92485, 102290, 134714, 184970, 204580, 269428, 336785, 369940, 673570, 1347140, 3569921, 7139842, 14279684, 17849605, 35699210, 71398420]

約数ペア:

[(1, 71398420), (2, 35699210), (4, 17849605), (5, 14279684), (10, 7139842), (20, 3569921), (53, 1347140), (106, 673570), (193, 369940), (212, 336785), (265, 269428), (349, 204580), (386, 184970), (530, 134714), (698, 102290), (772, 92485), (965, 73988), (1060, 67357), (1396, 51145), (1745, 40916), (1930, 36994), (3490, 20458), (3860, 18497), (6980, 10229)]