308928520

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{145721}}^1$

素因数の和:145785

約数の個数: 32

約数和(自身を含む): 708208920

約数和(自身を除く): 399280400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 145721, 291442, 582884, 728605, 1165768, 1457210, 2914420, 5828840, 7723213, 15446426, 30892852, 38616065, 61785704, 77232130, 154464260, 308928520]

約数ペア:

[(1, 308928520), (2, 154464260), (4, 77232130), (5, 61785704), (8, 38616065), (10, 30892852), (20, 15446426), (40, 7723213), (53, 5828840), (106, 2914420), (212, 1457210), (265, 1165768), (424, 728605), (530, 582884), (1060, 291442), (2120, 145721)]