21000481497

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{353}}^1$

素因数の和:560

約数の個数: 128

約数和(自身を含む): 35332485120

約数和(自身を除く): 14332003623

約数列:

[1, 3, 9, 17, 27, 31, 37, 51, 93, 111, 113, 153, 279, 333, 339, 353, 459, 527, 629, 837, 999, 1017, 1059, 1147, 1581, 1887, 1921, 3051, 3177, 3441, 3503, 4181, 4743, 5661, 5763, 6001, 9531, 10323, 10509, 10943, 12543, 13061, 14229, 16983, 17289, 18003, 19499, 30969, 31527, 32829, 37629, 39183, 39889, 51867, 54009, 58497, 59551, 71077, 94581, 98487, 112887, 117549, 119667, 129611, 162027, 175491, 178653, 186031, 213231, 222037, 295461, 352647, 359001, 388833, 404891, 526473, 535959, 558093, 639693, 666111, 678113, 1077003, 1166499, 1214673, 1236559, 1475893, 1607877, 1674279, 1919079, 1998333, 2034339, 2203387, 3499497, 3644019, 3709677, 4427679, 5022837, 5994999, 6103017, 6610161, 6883147, 10932057, 11129031, 13283037, 18309051, 19830483, 20649441, 21021503, 25090181, 33387093, 39849111, 45752683, 59491449, 61948323, 63064509, 75270543, 137258049, 185844969, 189193527, 225811629, 411774147, 567580581, 677434887, 777795611, 1235322441, 2333386833, 7000160499, 21000481497]

約数ペア:

[(1, 21000481497), (3, 7000160499), (9, 2333386833), (17, 1235322441), (27, 777795611), (31, 677434887), (37, 567580581), (51, 411774147), (93, 225811629), (111, 189193527), (113, 185844969), (153, 137258049), (279, 75270543), (333, 63064509), (339, 61948323), (353, 59491449), (459, 45752683), (527, 39849111), (629, 33387093), (837, 25090181), (999, 21021503), (1017, 20649441), (1059, 19830483), (1147, 18309051), (1581, 13283037), (1887, 11129031), (1921, 10932057), (3051, 6883147), (3177, 6610161), (3441, 6103017), (3503, 5994999), (4181, 5022837), (4743, 4427679), (5661, 3709677), (5763, 3644019), (6001, 3499497), (9531, 2203387), (10323, 2034339), (10509, 1998333), (10943, 1919079), (12543, 1674279), (13061, 1607877), (14229, 1475893), (16983, 1236559), (17289, 1214673), (18003, 1166499), (19499, 1077003), (30969, 678113), (31527, 666111), (32829, 639693), (37629, 558093), (39183, 535959), (39889, 526473), (51867, 404891), (54009, 388833), (58497, 359001), (59551, 352647), (71077, 295461), (94581, 222037), (98487, 213231), (112887, 186031), (117549, 178653), (119667, 175491), (129611, 162027)]