813082880

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^2\times {\mathrm{661}}^1$

素因数の和:744

約数の個数: 108

約数和(自身を含む): 2015484156

約数和(自身を除く): 1202401276

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 661, 961, 992, 1240, 1280, 1322, 1922, 1984, 2480, 2644, 3305, 3844, 3968, 4805, 4960, 5288, 6610, 7688, 7936, 9610, 9920, 10576, 13220, 15376, 19220, 19840, 20491, 21152, 26440, 30752, 38440, 39680, 40982, 42304, 52880, 61504, 76880, 81964, 84608, 102455, 105760, 123008, 153760, 163928, 169216, 204910, 211520, 246016, 307520, 327856, 409820, 423040, 615040, 635221, 655712, 819640, 846080, 1230080, 1270442, 1311424, 1639280, 2540884, 2622848, 3176105, 3278560, 5081768, 5245696, 6352210, 6557120, 10163536, 12704420, 13114240, 20327072, 25408840, 26228480, 40654144, 50817680, 81308288, 101635360, 162616576, 203270720, 406541440, 813082880]

約数ペア:

[(1, 813082880), (2, 406541440), (4, 203270720), (5, 162616576), (8, 101635360), (10, 81308288), (16, 50817680), (20, 40654144), (31, 26228480), (32, 25408840), (40, 20327072), (62, 13114240), (64, 12704420), (80, 10163536), (124, 6557120), (128, 6352210), (155, 5245696), (160, 5081768), (248, 3278560), (256, 3176105), (310, 2622848), (320, 2540884), (496, 1639280), (620, 1311424), (640, 1270442), (661, 1230080), (961, 846080), (992, 819640), (1240, 655712), (1280, 635221), (1322, 615040), (1922, 423040), (1984, 409820), (2480, 327856), (2644, 307520), (3305, 246016), (3844, 211520), (3968, 204910), (4805, 169216), (4960, 163928), (5288, 153760), (6610, 123008), (7688, 105760), (7936, 102455), (9610, 84608), (9920, 81964), (10576, 76880), (13220, 61504), (15376, 52880), (19220, 42304), (19840, 40982), (20491, 39680), (21152, 38440), (26440, 30752)]