21395400

素因数分解:

$2^3\times 3^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{211}}^1$

素因数の和:256

約数の個数: 144

約数和(自身を含む): 72160560

約数和(自身を除く): 50765160

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, 169, 195, 200, 211, 260, 300, 312, 325, 338, 390, 422, 507, 520, 600, 633, 650, 676, 780, 844, 845, 975, 1014, 1055, 1266, 1300, 1352, 1560, 1688, 1690, 1950, 2028, 2110, 2532, 2535, 2600, 2743, 3165, 3380, 3900, 4056, 4220, 4225, 5064, 5070, 5275, 5486, 6330, 6760, 7800, 8229, 8440, 8450, 10140, 10550, 10972, 12660, 12675, 13715, 15825, 16458, 16900, 20280, 21100, 21944, 25320, 25350, 27430, 31650, 32916, 33800, 35659, 41145, 42200, 50700, 54860, 63300, 65832, 68575, 71318, 82290, 101400, 106977, 109720, 126600, 137150, 142636, 164580, 178295, 205725, 213954, 274300, 285272, 329160, 356590, 411450, 427908, 534885, 548600, 713180, 822900, 855816, 891475, 1069770, 1426360, 1645800, 1782950, 2139540, 2674425, 3565900, 4279080, 5348850, 7131800, 10697700, 21395400]

約数ペア:

[(1, 21395400), (2, 10697700), (3, 7131800), (4, 5348850), (5, 4279080), (6, 3565900), (8, 2674425), (10, 2139540), (12, 1782950), (13, 1645800), (15, 1426360), (20, 1069770), (24, 891475), (25, 855816), (26, 822900), (30, 713180), (39, 548600), (40, 534885), (50, 427908), (52, 411450), (60, 356590), (65, 329160), (75, 285272), (78, 274300), (100, 213954), (104, 205725), (120, 178295), (130, 164580), (150, 142636), (156, 137150), (169, 126600), (195, 109720), (200, 106977), (211, 101400), (260, 82290), (300, 71318), (312, 68575), (325, 65832), (338, 63300), (390, 54860), (422, 50700), (507, 42200), (520, 41145), (600, 35659), (633, 33800), (650, 32916), (676, 31650), (780, 27430), (844, 25350), (845, 25320), (975, 21944), (1014, 21100), (1055, 20280), (1266, 16900), (1300, 16458), (1352, 15825), (1560, 13715), (1688, 12675), (1690, 12660), (1950, 10972), (2028, 10550), (2110, 10140), (2532, 8450), (2535, 8440), (2600, 8229), (2743, 7800), (3165, 6760), (3380, 6330), (3900, 5486), (4056, 5275), (4220, 5070), (4225, 5064)]