643427840

素因数分解:

$2^9\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{313}}^1$

素因数の和:420

約数の個数: 160

約数和(自身を含む): 1711470816

約数和(自身を除く): 1068042976

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 73, 80, 88, 110, 128, 146, 160, 176, 220, 256, 292, 313, 320, 352, 365, 440, 512, 584, 626, 640, 704, 730, 803, 880, 1168, 1252, 1280, 1408, 1460, 1565, 1606, 1760, 2336, 2504, 2560, 2816, 2920, 3130, 3212, 3443, 3520, 4015, 4672, 5008, 5632, 5840, 6260, 6424, 6886, 7040, 8030, 9344, 10016, 11680, 12520, 12848, 13772, 14080, 16060, 17215, 18688, 20032, 22849, 23360, 25040, 25696, 27544, 28160, 32120, 34430, 37376, 40064, 45698, 46720, 50080, 51392, 55088, 64240, 68860, 80128, 91396, 93440, 100160, 102784, 110176, 114245, 128480, 137720, 160256, 182792, 186880, 200320, 205568, 220352, 228490, 251339, 256960, 275440, 365584, 400640, 411136, 440704, 456980, 502678, 513920, 550880, 731168, 801280, 881408, 913960, 1005356, 1027840, 1101760, 1256695, 1462336, 1762816, 1827920, 2010712, 2055680, 2203520, 2513390, 2924672, 3655840, 4021424, 4407040, 5026780, 5849344, 7311680, 8042848, 8814080, 10053560, 11698688, 14623360, 16085696, 20107120, 29246720, 32171392, 40214240, 58493440, 64342784, 80428480, 128685568, 160856960, 321713920, 643427840]

約数ペア:

[(1, 643427840), (2, 321713920), (4, 160856960), (5, 128685568), (8, 80428480), (10, 64342784), (11, 58493440), (16, 40214240), (20, 32171392), (22, 29246720), (32, 20107120), (40, 16085696), (44, 14623360), (55, 11698688), (64, 10053560), (73, 8814080), (80, 8042848), (88, 7311680), (110, 5849344), (128, 5026780), (146, 4407040), (160, 4021424), (176, 3655840), (220, 2924672), (256, 2513390), (292, 2203520), (313, 2055680), (320, 2010712), (352, 1827920), (365, 1762816), (440, 1462336), (512, 1256695), (584, 1101760), (626, 1027840), (640, 1005356), (704, 913960), (730, 881408), (803, 801280), (880, 731168), (1168, 550880), (1252, 513920), (1280, 502678), (1408, 456980), (1460, 440704), (1565, 411136), (1606, 400640), (1760, 365584), (2336, 275440), (2504, 256960), (2560, 251339), (2816, 228490), (2920, 220352), (3130, 205568), (3212, 200320), (3443, 186880), (3520, 182792), (4015, 160256), (4672, 137720), (5008, 128480), (5632, 114245), (5840, 110176), (6260, 102784), (6424, 100160), (6886, 93440), (7040, 91396), (8030, 80128), (9344, 68860), (10016, 64240), (11680, 55088), (12520, 51392), (12848, 50080), (13772, 46720), (14080, 45698), (16060, 40064), (17215, 37376), (18688, 34430), (20032, 32120), (22849, 28160), (23360, 27544), (25040, 25696)]