87821720

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:242

約数の個数: 128

約数和(自身を含む): 238032000

約数和(自身を除く): 150210280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 49, 56, 70, 74, 98, 140, 148, 173, 185, 196, 245, 259, 280, 296, 343, 346, 370, 392, 490, 518, 686, 692, 740, 865, 980, 1036, 1211, 1295, 1372, 1384, 1480, 1715, 1730, 1813, 1960, 2072, 2422, 2590, 2744, 3430, 3460, 3626, 4844, 5180, 6055, 6401, 6860, 6920, 7252, 8477, 9065, 9688, 10360, 12110, 12691, 12802, 13720, 14504, 16954, 18130, 24220, 25382, 25604, 32005, 33908, 36260, 42385, 44807, 48440, 50764, 51208, 59339, 63455, 64010, 67816, 72520, 84770, 89614, 101528, 118678, 126910, 128020, 169540, 179228, 224035, 237356, 253820, 256040, 296695, 313649, 339080, 358456, 448070, 474712, 507640, 593390, 627298, 896140, 1186780, 1254596, 1568245, 1792280, 2195543, 2373560, 2509192, 3136490, 4391086, 6272980, 8782172, 10977715, 12545960, 17564344, 21955430, 43910860, 87821720]

約数ペア:

[(1, 87821720), (2, 43910860), (4, 21955430), (5, 17564344), (7, 12545960), (8, 10977715), (10, 8782172), (14, 6272980), (20, 4391086), (28, 3136490), (35, 2509192), (37, 2373560), (40, 2195543), (49, 1792280), (56, 1568245), (70, 1254596), (74, 1186780), (98, 896140), (140, 627298), (148, 593390), (173, 507640), (185, 474712), (196, 448070), (245, 358456), (259, 339080), (280, 313649), (296, 296695), (343, 256040), (346, 253820), (370, 237356), (392, 224035), (490, 179228), (518, 169540), (686, 128020), (692, 126910), (740, 118678), (865, 101528), (980, 89614), (1036, 84770), (1211, 72520), (1295, 67816), (1372, 64010), (1384, 63455), (1480, 59339), (1715, 51208), (1730, 50764), (1813, 48440), (1960, 44807), (2072, 42385), (2422, 36260), (2590, 33908), (2744, 32005), (3430, 25604), (3460, 25382), (3626, 24220), (4844, 18130), (5180, 16954), (6055, 14504), (6401, 13720), (6860, 12802), (6920, 12691), (7252, 12110), (8477, 10360), (9065, 9688)]