311617280

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{307}}^1$

素因数の和:402

約数の個数: 144

約数和(自身を含む): 819676704

約数和(自身を除く): 508059424

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 61, 64, 65, 80, 104, 122, 128, 130, 160, 208, 244, 256, 260, 305, 307, 320, 416, 488, 520, 610, 614, 640, 793, 832, 976, 1040, 1220, 1228, 1280, 1535, 1586, 1664, 1952, 2080, 2440, 2456, 3070, 3172, 3328, 3904, 3965, 3991, 4160, 4880, 4912, 6140, 6344, 7808, 7930, 7982, 8320, 9760, 9824, 12280, 12688, 15616, 15860, 15964, 16640, 18727, 19520, 19648, 19955, 24560, 25376, 31720, 31928, 37454, 39040, 39296, 39910, 49120, 50752, 63440, 63856, 74908, 78080, 78592, 79820, 93635, 98240, 101504, 126880, 127712, 149816, 159640, 187270, 196480, 203008, 243451, 253760, 255424, 299632, 319280, 374540, 392960, 486902, 507520, 510848, 599264, 638560, 749080, 973804, 1015040, 1021696, 1198528, 1217255, 1277120, 1498160, 1947608, 2397056, 2434510, 2554240, 2996320, 3895216, 4794112, 4869020, 5108480, 5992640, 7790432, 9738040, 11985280, 15580864, 19476080, 23970560, 31161728, 38952160, 62323456, 77904320, 155808640, 311617280]

約数ペア:

[(1, 311617280), (2, 155808640), (4, 77904320), (5, 62323456), (8, 38952160), (10, 31161728), (13, 23970560), (16, 19476080), (20, 15580864), (26, 11985280), (32, 9738040), (40, 7790432), (52, 5992640), (61, 5108480), (64, 4869020), (65, 4794112), (80, 3895216), (104, 2996320), (122, 2554240), (128, 2434510), (130, 2397056), (160, 1947608), (208, 1498160), (244, 1277120), (256, 1217255), (260, 1198528), (305, 1021696), (307, 1015040), (320, 973804), (416, 749080), (488, 638560), (520, 599264), (610, 510848), (614, 507520), (640, 486902), (793, 392960), (832, 374540), (976, 319280), (1040, 299632), (1220, 255424), (1228, 253760), (1280, 243451), (1535, 203008), (1586, 196480), (1664, 187270), (1952, 159640), (2080, 149816), (2440, 127712), (2456, 126880), (3070, 101504), (3172, 98240), (3328, 93635), (3904, 79820), (3965, 78592), (3991, 78080), (4160, 74908), (4880, 63856), (4912, 63440), (6140, 50752), (6344, 49120), (7808, 39910), (7930, 39296), (7982, 39040), (8320, 37454), (9760, 31928), (9824, 31720), (12280, 25376), (12688, 24560), (15616, 19955), (15860, 19648), (15964, 19520), (16640, 18727)]