81098920

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{23}}^1\times {\mathrm{257}}^1$

素因数の和:312

約数の個数: 128

約数和(自身を含む): 222912000

約数和(自身を除く): 141813080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 49, 56, 70, 92, 98, 115, 140, 161, 184, 196, 230, 245, 257, 280, 322, 343, 392, 460, 490, 514, 644, 686, 805, 920, 980, 1028, 1127, 1285, 1288, 1372, 1610, 1715, 1799, 1960, 2056, 2254, 2570, 2744, 3220, 3430, 3598, 4508, 5140, 5635, 5911, 6440, 6860, 7196, 7889, 8995, 9016, 10280, 11270, 11822, 12593, 13720, 14392, 15778, 17990, 22540, 23644, 25186, 29555, 31556, 35980, 39445, 41377, 45080, 47288, 50372, 59110, 62965, 63112, 71960, 78890, 82754, 88151, 100744, 118220, 125930, 157780, 165508, 176302, 206885, 236440, 251860, 289639, 315560, 331016, 352604, 413770, 440755, 503720, 579278, 705208, 827540, 881510, 1158556, 1448195, 1655080, 1763020, 2027473, 2317112, 2896390, 3526040, 4054946, 5792780, 8109892, 10137365, 11585560, 16219784, 20274730, 40549460, 81098920]

約数ペア:

[(1, 81098920), (2, 40549460), (4, 20274730), (5, 16219784), (7, 11585560), (8, 10137365), (10, 8109892), (14, 5792780), (20, 4054946), (23, 3526040), (28, 2896390), (35, 2317112), (40, 2027473), (46, 1763020), (49, 1655080), (56, 1448195), (70, 1158556), (92, 881510), (98, 827540), (115, 705208), (140, 579278), (161, 503720), (184, 440755), (196, 413770), (230, 352604), (245, 331016), (257, 315560), (280, 289639), (322, 251860), (343, 236440), (392, 206885), (460, 176302), (490, 165508), (514, 157780), (644, 125930), (686, 118220), (805, 100744), (920, 88151), (980, 82754), (1028, 78890), (1127, 71960), (1285, 63112), (1288, 62965), (1372, 59110), (1610, 50372), (1715, 47288), (1799, 45080), (1960, 41377), (2056, 39445), (2254, 35980), (2570, 31556), (2744, 29555), (3220, 25186), (3430, 23644), (3598, 22540), (4508, 17990), (5140, 15778), (5635, 14392), (5911, 13720), (6440, 12593), (6860, 11822), (7196, 11270), (7889, 10280), (8995, 9016)]