81863680

素因数分解:

$2^{10}\times 5^1\times {\mathrm{59}}^1\times {\mathrm{271}}^1$

素因数の和:355

約数の個数: 88

約数和(自身を含む): 200442240

約数和(自身を除く): 118578560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 59, 64, 80, 118, 128, 160, 236, 256, 271, 295, 320, 472, 512, 542, 590, 640, 944, 1024, 1084, 1180, 1280, 1355, 1888, 2168, 2360, 2560, 2710, 3776, 4336, 4720, 5120, 5420, 7552, 8672, 9440, 10840, 15104, 15989, 17344, 18880, 21680, 30208, 31978, 34688, 37760, 43360, 60416, 63956, 69376, 75520, 79945, 86720, 127912, 138752, 151040, 159890, 173440, 255824, 277504, 302080, 319780, 346880, 511648, 639560, 693760, 1023296, 1279120, 1387520, 2046592, 2558240, 4093184, 5116480, 8186368, 10232960, 16372736, 20465920, 40931840, 81863680]

約数ペア:

[(1, 81863680), (2, 40931840), (4, 20465920), (5, 16372736), (8, 10232960), (10, 8186368), (16, 5116480), (20, 4093184), (32, 2558240), (40, 2046592), (59, 1387520), (64, 1279120), (80, 1023296), (118, 693760), (128, 639560), (160, 511648), (236, 346880), (256, 319780), (271, 302080), (295, 277504), (320, 255824), (472, 173440), (512, 159890), (542, 151040), (590, 138752), (640, 127912), (944, 86720), (1024, 79945), (1084, 75520), (1180, 69376), (1280, 63956), (1355, 60416), (1888, 43360), (2168, 37760), (2360, 34688), (2560, 31978), (2710, 30208), (3776, 21680), (4336, 18880), (4720, 17344), (5120, 15989), (5420, 15104), (7552, 10840), (8672, 9440)]