128376460

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{239}}^1\times {\mathrm{251}}^1$

素因数の和:606

約数の個数: 48

約数和(自身を含む): 274337280

約数和(自身を除く): 145960820

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 239, 251, 428, 478, 502, 535, 956, 1004, 1070, 1195, 1255, 2140, 2390, 2510, 4780, 5020, 25573, 26857, 51146, 53714, 59989, 102292, 107428, 119978, 127865, 134285, 239956, 255730, 268570, 299945, 511460, 537140, 599890, 1199780, 6418823, 12837646, 25675292, 32094115, 64188230, 128376460]

約数ペア:

[(1, 128376460), (2, 64188230), (4, 32094115), (5, 25675292), (10, 12837646), (20, 6418823), (107, 1199780), (214, 599890), (239, 537140), (251, 511460), (428, 299945), (478, 268570), (502, 255730), (535, 239956), (956, 134285), (1004, 127865), (1070, 119978), (1195, 107428), (1255, 102292), (2140, 59989), (2390, 53714), (2510, 51146), (4780, 26857), (5020, 25573)]