263440

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:139

約数の個数: 40

約数和(自身を含む): 636120

約数和(自身を除く): 372680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 89, 148, 178, 185, 296, 356, 370, 445, 592, 712, 740, 890, 1424, 1480, 1780, 2960, 3293, 3560, 6586, 7120, 13172, 16465, 26344, 32930, 52688, 65860, 131720, 263440]

約数ペア:

[(1, 263440), (2, 131720), (4, 65860), (5, 52688), (8, 32930), (10, 26344), (16, 16465), (20, 13172), (37, 7120), (40, 6586), (74, 3560), (80, 3293), (89, 2960), (148, 1780), (178, 1480), (185, 1424), (296, 890), (356, 740), (370, 712), (445, 592)]