20745400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1$

素因数の和:209

約数の個数: 96

約数和(自身を含む): 53121600

約数和(自身を除く): 32376200

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 79, 100, 101, 104, 130, 158, 200, 202, 260, 316, 325, 395, 404, 505, 520, 632, 650, 790, 808, 1010, 1027, 1300, 1313, 1580, 1975, 2020, 2054, 2525, 2600, 2626, 3160, 3950, 4040, 4108, 5050, 5135, 5252, 6565, 7900, 7979, 8216, 10100, 10270, 10504, 13130, 15800, 15958, 20200, 20540, 25675, 26260, 31916, 32825, 39895, 41080, 51350, 52520, 63832, 65650, 79790, 102700, 103727, 131300, 159580, 199475, 205400, 207454, 262600, 319160, 398950, 414908, 518635, 797900, 829816, 1037270, 1595800, 2074540, 2593175, 4149080, 5186350, 10372700, 20745400]

約数ペア:

[(1, 20745400), (2, 10372700), (4, 5186350), (5, 4149080), (8, 2593175), (10, 2074540), (13, 1595800), (20, 1037270), (25, 829816), (26, 797900), (40, 518635), (50, 414908), (52, 398950), (65, 319160), (79, 262600), (100, 207454), (101, 205400), (104, 199475), (130, 159580), (158, 131300), (200, 103727), (202, 102700), (260, 79790), (316, 65650), (325, 63832), (395, 52520), (404, 51350), (505, 41080), (520, 39895), (632, 32825), (650, 31916), (790, 26260), (808, 25675), (1010, 20540), (1027, 20200), (1300, 15958), (1313, 15800), (1580, 13130), (1975, 10504), (2020, 10270), (2054, 10100), (2525, 8216), (2600, 7979), (2626, 7900), (3160, 6565), (3950, 5252), (4040, 5135), (4108, 5050)]