20117120

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^2$

素因数の和:122

約数の個数: 96

約数和(自身を含む): 52133220

約数和(自身を除く): 32016100

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 43, 64, 68, 80, 85, 86, 128, 136, 160, 170, 172, 215, 272, 320, 340, 344, 430, 544, 640, 680, 688, 731, 860, 1088, 1360, 1376, 1462, 1720, 1849, 2176, 2720, 2752, 2924, 3440, 3655, 3698, 5440, 5504, 5848, 6880, 7310, 7396, 9245, 10880, 11696, 13760, 14620, 14792, 18490, 23392, 27520, 29240, 29584, 31433, 36980, 46784, 58480, 59168, 62866, 73960, 93568, 116960, 118336, 125732, 147920, 157165, 233920, 236672, 251464, 295840, 314330, 467840, 502928, 591680, 628660, 1005856, 1183360, 1257320, 2011712, 2514640, 4023424, 5029280, 10058560, 20117120]

約数ペア:

[(1, 20117120), (2, 10058560), (4, 5029280), (5, 4023424), (8, 2514640), (10, 2011712), (16, 1257320), (17, 1183360), (20, 1005856), (32, 628660), (34, 591680), (40, 502928), (43, 467840), (64, 314330), (68, 295840), (80, 251464), (85, 236672), (86, 233920), (128, 157165), (136, 147920), (160, 125732), (170, 118336), (172, 116960), (215, 93568), (272, 73960), (320, 62866), (340, 59168), (344, 58480), (430, 46784), (544, 36980), (640, 31433), (680, 29584), (688, 29240), (731, 27520), (860, 23392), (1088, 18490), (1360, 14792), (1376, 14620), (1462, 13760), (1720, 11696), (1849, 10880), (2176, 9245), (2720, 7396), (2752, 7310), (2924, 6880), (3440, 5848), (3655, 5504), (3698, 5440)]