21005400

素因数分解:

$2^3\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{2693}}^1$

素因数の和:2725

約数の個数: 96

約数和(自身を含む): 70151760

約数和(自身を除く): 49146360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 25, 26, 30, 39, 40, 50, 52, 60, 65, 75, 78, 100, 104, 120, 130, 150, 156, 195, 200, 260, 300, 312, 325, 390, 520, 600, 650, 780, 975, 1300, 1560, 1950, 2600, 2693, 3900, 5386, 7800, 8079, 10772, 13465, 16158, 21544, 26930, 32316, 35009, 40395, 53860, 64632, 67325, 70018, 80790, 105027, 107720, 134650, 140036, 161580, 175045, 201975, 210054, 269300, 280072, 323160, 350090, 403950, 420108, 525135, 538600, 700180, 807900, 840216, 875225, 1050270, 1400360, 1615800, 1750450, 2100540, 2625675, 3500900, 4201080, 5251350, 7001800, 10502700, 21005400]

約数ペア:

[(1, 21005400), (2, 10502700), (3, 7001800), (4, 5251350), (5, 4201080), (6, 3500900), (8, 2625675), (10, 2100540), (12, 1750450), (13, 1615800), (15, 1400360), (20, 1050270), (24, 875225), (25, 840216), (26, 807900), (30, 700180), (39, 538600), (40, 525135), (50, 420108), (52, 403950), (60, 350090), (65, 323160), (75, 280072), (78, 269300), (100, 210054), (104, 201975), (120, 175045), (130, 161580), (150, 140036), (156, 134650), (195, 107720), (200, 105027), (260, 80790), (300, 70018), (312, 67325), (325, 64632), (390, 53860), (520, 40395), (600, 35009), (650, 32316), (780, 26930), (975, 21544), (1300, 16158), (1560, 13465), (1950, 10772), (2600, 8079), (2693, 7800), (3900, 5386)]