638577520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1153}}^1$

素因数の和:1239

約数の個数: 160

約数和(自身を含む): 1813312512

約数和(自身を除く): 1174734992

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 43, 46, 56, 70, 80, 86, 92, 112, 115, 140, 161, 172, 184, 215, 230, 280, 301, 322, 344, 368, 430, 460, 560, 602, 644, 688, 805, 860, 920, 989, 1153, 1204, 1288, 1505, 1610, 1720, 1840, 1978, 2306, 2408, 2576, 3010, 3220, 3440, 3956, 4612, 4816, 4945, 5765, 6020, 6440, 6923, 7912, 8071, 9224, 9890, 11530, 12040, 12880, 13846, 15824, 16142, 18448, 19780, 23060, 24080, 26519, 27692, 32284, 34615, 39560, 40355, 46120, 49579, 53038, 55384, 64568, 69230, 79120, 80710, 92240, 99158, 106076, 110768, 129136, 132595, 138460, 161420, 185633, 198316, 212152, 247895, 265190, 276920, 322840, 347053, 371266, 396632, 424304, 495790, 530380, 553840, 645680, 694106, 742532, 793264, 928165, 991580, 1060760, 1140317, 1388212, 1485064, 1735265, 1856330, 1983160, 2121520, 2280634, 2776424, 2970128, 3470530, 3712660, 3966320, 4561268, 5552848, 5701585, 6941060, 7425320, 7982219, 9122536, 11403170, 13882120, 14850640, 15964438, 18245072, 22806340, 27764240, 31928876, 39911095, 45612680, 63857752, 79822190, 91225360, 127715504, 159644380, 319288760, 638577520]

約数ペア:

[(1, 638577520), (2, 319288760), (4, 159644380), (5, 127715504), (7, 91225360), (8, 79822190), (10, 63857752), (14, 45612680), (16, 39911095), (20, 31928876), (23, 27764240), (28, 22806340), (35, 18245072), (40, 15964438), (43, 14850640), (46, 13882120), (56, 11403170), (70, 9122536), (80, 7982219), (86, 7425320), (92, 6941060), (112, 5701585), (115, 5552848), (140, 4561268), (161, 3966320), (172, 3712660), (184, 3470530), (215, 2970128), (230, 2776424), (280, 2280634), (301, 2121520), (322, 1983160), (344, 1856330), (368, 1735265), (430, 1485064), (460, 1388212), (560, 1140317), (602, 1060760), (644, 991580), (688, 928165), (805, 793264), (860, 742532), (920, 694106), (989, 645680), (1153, 553840), (1204, 530380), (1288, 495790), (1505, 424304), (1610, 396632), (1720, 371266), (1840, 347053), (1978, 322840), (2306, 276920), (2408, 265190), (2576, 247895), (3010, 212152), (3220, 198316), (3440, 185633), (3956, 161420), (4612, 138460), (4816, 132595), (4945, 129136), (5765, 110768), (6020, 106076), (6440, 99158), (6923, 92240), (7912, 80710), (8071, 79120), (9224, 69230), (9890, 64568), (11530, 55384), (12040, 53038), (12880, 49579), (13846, 46120), (15824, 40355), (16142, 39560), (18448, 34615), (19780, 32284), (23060, 27692), (24080, 26519)]