20121155840

素因数分解:

$2^8\times 5^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{4973}}^1$

素因数の和:5132

約数の個数: 144

約数和(自身を含む): 50325937200

約数和(自身を除く): 30204781360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 109, 116, 128, 145, 160, 218, 232, 256, 290, 320, 436, 464, 545, 580, 640, 872, 928, 1090, 1160, 1280, 1744, 1856, 2180, 2320, 3161, 3488, 3712, 4360, 4640, 4973, 6322, 6976, 7424, 8720, 9280, 9946, 12644, 13952, 15805, 17440, 18560, 19892, 24865, 25288, 27904, 31610, 34880, 37120, 39784, 49730, 50576, 63220, 69760, 79568, 99460, 101152, 126440, 139520, 144217, 159136, 198920, 202304, 252880, 288434, 318272, 397840, 404608, 505760, 542057, 576868, 636544, 721085, 795680, 809216, 1011520, 1084114, 1153736, 1273088, 1442170, 1591360, 2023040, 2168228, 2307472, 2710285, 2884340, 3182720, 4046080, 4336456, 4614944, 5420570, 5768680, 6365440, 8672912, 9229888, 10841140, 11537360, 15719653, 17345824, 18459776, 21682280, 23074720, 31439306, 34691648, 36919552, 43364560, 46149440, 62878612, 69383296, 78598265, 86729120, 92298880, 125757224, 138766592, 157196530, 173458240, 184597760, 251514448, 314393060, 346916480, 503028896, 628786120, 693832960, 1006057792, 1257572240, 2012115584, 2515144480, 4024231168, 5030288960, 10060577920, 20121155840]

約数ペア:

[(1, 20121155840), (2, 10060577920), (4, 5030288960), (5, 4024231168), (8, 2515144480), (10, 2012115584), (16, 1257572240), (20, 1006057792), (29, 693832960), (32, 628786120), (40, 503028896), (58, 346916480), (64, 314393060), (80, 251514448), (109, 184597760), (116, 173458240), (128, 157196530), (145, 138766592), (160, 125757224), (218, 92298880), (232, 86729120), (256, 78598265), (290, 69383296), (320, 62878612), (436, 46149440), (464, 43364560), (545, 36919552), (580, 34691648), (640, 31439306), (872, 23074720), (928, 21682280), (1090, 18459776), (1160, 17345824), (1280, 15719653), (1744, 11537360), (1856, 10841140), (2180, 9229888), (2320, 8672912), (3161, 6365440), (3488, 5768680), (3712, 5420570), (4360, 4614944), (4640, 4336456), (4973, 4046080), (6322, 3182720), (6976, 2884340), (7424, 2710285), (8720, 2307472), (9280, 2168228), (9946, 2023040), (12644, 1591360), (13952, 1442170), (15805, 1273088), (17440, 1153736), (18560, 1084114), (19892, 1011520), (24865, 809216), (25288, 795680), (27904, 721085), (31610, 636544), (34880, 576868), (37120, 542057), (39784, 505760), (49730, 404608), (50576, 397840), (63220, 318272), (69760, 288434), (79568, 252880), (99460, 202304), (101152, 198920), (126440, 159136), (139520, 144217)]