91018520

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{691}}^1$

素因数の和:828

約数の個数: 64

約数和(自身を含む): 212997600

約数和(自身を除く): 121979080

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 89, 148, 178, 185, 296, 356, 370, 445, 691, 712, 740, 890, 1382, 1480, 1780, 2764, 3293, 3455, 3560, 5528, 6586, 6910, 13172, 13820, 16465, 25567, 26344, 27640, 32930, 51134, 61499, 65860, 102268, 122998, 127835, 131720, 204536, 245996, 255670, 307495, 491992, 511340, 614990, 1022680, 1229980, 2275463, 2459960, 4550926, 9101852, 11377315, 18203704, 22754630, 45509260, 91018520]

約数ペア:

[(1, 91018520), (2, 45509260), (4, 22754630), (5, 18203704), (8, 11377315), (10, 9101852), (20, 4550926), (37, 2459960), (40, 2275463), (74, 1229980), (89, 1022680), (148, 614990), (178, 511340), (185, 491992), (296, 307495), (356, 255670), (370, 245996), (445, 204536), (691, 131720), (712, 127835), (740, 122998), (890, 102268), (1382, 65860), (1480, 61499), (1780, 51134), (2764, 32930), (3293, 27640), (3455, 26344), (3560, 25567), (5528, 16465), (6586, 13820), (6910, 13172)]