128642640

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{10939}}^1$

素因数の和:10969

約数の個数: 120

約数和(自身を含む): 463943520

約数和(自身を除く): 335300880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 98, 105, 112, 120, 140, 147, 168, 196, 210, 240, 245, 280, 294, 336, 392, 420, 490, 560, 588, 735, 784, 840, 980, 1176, 1470, 1680, 1960, 2352, 2940, 3920, 5880, 10939, 11760, 21878, 32817, 43756, 54695, 65634, 76573, 87512, 109390, 131268, 153146, 164085, 175024, 218780, 229719, 262536, 306292, 328170, 382865, 437560, 459438, 525072, 536011, 612584, 656340, 765730, 875120, 918876, 1072022, 1148595, 1225168, 1312680, 1531460, 1608033, 1837752, 2144044, 2297190, 2625360, 2680055, 3062920, 3216066, 3675504, 4288088, 4594380, 5360110, 6125840, 6432132, 8040165, 8576176, 9188760, 10720220, 12864264, 16080330, 18377520, 21440440, 25728528, 32160660, 42880880, 64321320, 128642640]

約数ペア:

[(1, 128642640), (2, 64321320), (3, 42880880), (4, 32160660), (5, 25728528), (6, 21440440), (7, 18377520), (8, 16080330), (10, 12864264), (12, 10720220), (14, 9188760), (15, 8576176), (16, 8040165), (20, 6432132), (21, 6125840), (24, 5360110), (28, 4594380), (30, 4288088), (35, 3675504), (40, 3216066), (42, 3062920), (48, 2680055), (49, 2625360), (56, 2297190), (60, 2144044), (70, 1837752), (80, 1608033), (84, 1531460), (98, 1312680), (105, 1225168), (112, 1148595), (120, 1072022), (140, 918876), (147, 875120), (168, 765730), (196, 656340), (210, 612584), (240, 536011), (245, 525072), (280, 459438), (294, 437560), (336, 382865), (392, 328170), (420, 306292), (490, 262536), (560, 229719), (588, 218780), (735, 175024), (784, 164085), (840, 153146), (980, 131268), (1176, 109390), (1470, 87512), (1680, 76573), (1960, 65634), (2352, 54695), (2940, 43756), (3920, 32817), (5880, 21878), (10939, 11760)]