640187680

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1$

素因数の和:243

約数の個数: 192

約数和(自身を含む): 1721139840

約数和(自身を除く): 1080952160

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 61, 67, 80, 88, 89, 110, 122, 134, 160, 176, 178, 220, 244, 268, 305, 335, 352, 356, 440, 445, 488, 536, 610, 670, 671, 712, 737, 880, 890, 976, 979, 1072, 1220, 1340, 1342, 1424, 1474, 1760, 1780, 1952, 1958, 2144, 2440, 2680, 2684, 2848, 2948, 3355, 3560, 3685, 3916, 4087, 4880, 4895, 5360, 5368, 5429, 5896, 5963, 6710, 7120, 7370, 7832, 8174, 9760, 9790, 10720, 10736, 10858, 11792, 11926, 13420, 14240, 14740, 15664, 16348, 19580, 20435, 21472, 21716, 23584, 23852, 26840, 27145, 29480, 29815, 31328, 32696, 39160, 40870, 43432, 44957, 47704, 53680, 54290, 58960, 59630, 59719, 65392, 65593, 78320, 81740, 86864, 89914, 95408, 107360, 108580, 117920, 119260, 119438, 130784, 131186, 156640, 163480, 173728, 179828, 190816, 217160, 224785, 238520, 238876, 262372, 298595, 326960, 327965, 359656, 363743, 434320, 449570, 477040, 477752, 524744, 597190, 653920, 655930, 719312, 727486, 868640, 899140, 954080, 955504, 1049488, 1194380, 1311860, 1438624, 1454972, 1798280, 1818715, 1911008, 2098976, 2388760, 2623720, 2909944, 3596560, 3637430, 4001173, 4777520, 5247440, 5819888, 7193120, 7274860, 8002346, 9555040, 10494880, 11639776, 14549720, 16004692, 20005865, 29099440, 32009384, 40011730, 58198880, 64018768, 80023460, 128037536, 160046920, 320093840, 640187680]

約数ペア:

[(1, 640187680), (2, 320093840), (4, 160046920), (5, 128037536), (8, 80023460), (10, 64018768), (11, 58198880), (16, 40011730), (20, 32009384), (22, 29099440), (32, 20005865), (40, 16004692), (44, 14549720), (55, 11639776), (61, 10494880), (67, 9555040), (80, 8002346), (88, 7274860), (89, 7193120), (110, 5819888), (122, 5247440), (134, 4777520), (160, 4001173), (176, 3637430), (178, 3596560), (220, 2909944), (244, 2623720), (268, 2388760), (305, 2098976), (335, 1911008), (352, 1818715), (356, 1798280), (440, 1454972), (445, 1438624), (488, 1311860), (536, 1194380), (610, 1049488), (670, 955504), (671, 954080), (712, 899140), (737, 868640), (880, 727486), (890, 719312), (976, 655930), (979, 653920), (1072, 597190), (1220, 524744), (1340, 477752), (1342, 477040), (1424, 449570), (1474, 434320), (1760, 363743), (1780, 359656), (1952, 327965), (1958, 326960), (2144, 298595), (2440, 262372), (2680, 238876), (2684, 238520), (2848, 224785), (2948, 217160), (3355, 190816), (3560, 179828), (3685, 173728), (3916, 163480), (4087, 156640), (4880, 131186), (4895, 130784), (5360, 119438), (5368, 119260), (5429, 117920), (5896, 108580), (5963, 107360), (6710, 95408), (7120, 89914), (7370, 86864), (7832, 81740), (8174, 78320), (9760, 65593), (9790, 65392), (10720, 59719), (10736, 59630), (10858, 58960), (11792, 54290), (11926, 53680), (13420, 47704), (14240, 44957), (14740, 43432), (15664, 40870), (16348, 39160), (19580, 32696), (20435, 31328), (21472, 29815), (21716, 29480), (23584, 27145), (23852, 26840)]