21487278840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{263}}^1\times {\mathrm{269}}^1\times {\mathrm{2531}}^1$

素因数の和:3077

約数の個数: 128

約数和(自身を含む): 64973145600

約数和(自身を除く): 43485866760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 263, 269, 526, 538, 789, 807, 1052, 1076, 1315, 1345, 1578, 1614, 2104, 2152, 2531, 2630, 2690, 3156, 3228, 3945, 4035, 5062, 5260, 5380, 6312, 6456, 7593, 7890, 8070, 10124, 10520, 10760, 12655, 15186, 15780, 16140, 20248, 25310, 30372, 31560, 32280, 37965, 50620, 60744, 70747, 75930, 101240, 141494, 151860, 212241, 282988, 303720, 353735, 424482, 565976, 665653, 680839, 707470, 848964, 1061205, 1331306, 1361678, 1414940, 1697928, 1996959, 2042517, 2122410, 2662612, 2723356, 2829880, 3328265, 3404195, 3993918, 4085034, 4244820, 5325224, 5446712, 6656530, 6808390, 7987836, 8170068, 8489640, 9984795, 10212585, 13313060, 13616780, 15975672, 16340136, 19969590, 20425170, 26626120, 27233560, 39939180, 40850340, 79878360, 81700680, 179060657, 358121314, 537181971, 716242628, 895303285, 1074363942, 1432485256, 1790606570, 2148727884, 2685909855, 3581213140, 4297455768, 5371819710, 7162426280, 10743639420, 21487278840]

約数ペア:

[(1, 21487278840), (2, 10743639420), (3, 7162426280), (4, 5371819710), (5, 4297455768), (6, 3581213140), (8, 2685909855), (10, 2148727884), (12, 1790606570), (15, 1432485256), (20, 1074363942), (24, 895303285), (30, 716242628), (40, 537181971), (60, 358121314), (120, 179060657), (263, 81700680), (269, 79878360), (526, 40850340), (538, 39939180), (789, 27233560), (807, 26626120), (1052, 20425170), (1076, 19969590), (1315, 16340136), (1345, 15975672), (1578, 13616780), (1614, 13313060), (2104, 10212585), (2152, 9984795), (2531, 8489640), (2630, 8170068), (2690, 7987836), (3156, 6808390), (3228, 6656530), (3945, 5446712), (4035, 5325224), (5062, 4244820), (5260, 4085034), (5380, 3993918), (6312, 3404195), (6456, 3328265), (7593, 2829880), (7890, 2723356), (8070, 2662612), (10124, 2122410), (10520, 2042517), (10760, 1996959), (12655, 1697928), (15186, 1414940), (15780, 1361678), (16140, 1331306), (20248, 1061205), (25310, 848964), (30372, 707470), (31560, 680839), (32280, 665653), (37965, 565976), (50620, 424482), (60744, 353735), (70747, 303720), (75930, 282988), (101240, 212241), (141494, 151860)]