21506041600

素因数分解:

$2^8\times 5^2\times {\mathrm{41}}^2\times {\mathrm{1999}}^1$

素因数の和:2107

約数の個数: 162

約数和(自身を含む): 54588086000

約数和(自身を除く): 33082044400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 41, 50, 64, 80, 82, 100, 128, 160, 164, 200, 205, 256, 320, 328, 400, 410, 640, 656, 800, 820, 1025, 1280, 1312, 1600, 1640, 1681, 1999, 2050, 2624, 3200, 3280, 3362, 3998, 4100, 5248, 6400, 6560, 6724, 7996, 8200, 8405, 9995, 10496, 13120, 13448, 15992, 16400, 16810, 19990, 26240, 26896, 31984, 32800, 33620, 39980, 42025, 49975, 52480, 53792, 63968, 65600, 67240, 79960, 81959, 84050, 99950, 107584, 127936, 131200, 134480, 159920, 163918, 168100, 199900, 215168, 255872, 262400, 268960, 319840, 327836, 336200, 399800, 409795, 430336, 511744, 537920, 639680, 655672, 672400, 799600, 819590, 1075840, 1279360, 1311344, 1344800, 1599200, 1639180, 2048975, 2151680, 2558720, 2622688, 2689600, 3198400, 3278360, 3360319, 4097950, 5245376, 5379200, 6396800, 6556720, 6720638, 8195900, 10490752, 10758400, 12793600, 13113440, 13441276, 16391800, 16801595, 20981504, 26226880, 26882552, 32783600, 33603190, 52453760, 53765104, 65567200, 67206380, 84007975, 104907520, 107530208, 131134400, 134412760, 168015950, 215060416, 262268800, 268825520, 336031900, 430120832, 524537600, 537651040, 672063800, 860241664, 1075302080, 1344127600, 2150604160, 2688255200, 4301208320, 5376510400, 10753020800, 21506041600]

約数ペア:

[(1, 21506041600), (2, 10753020800), (4, 5376510400), (5, 4301208320), (8, 2688255200), (10, 2150604160), (16, 1344127600), (20, 1075302080), (25, 860241664), (32, 672063800), (40, 537651040), (41, 524537600), (50, 430120832), (64, 336031900), (80, 268825520), (82, 262268800), (100, 215060416), (128, 168015950), (160, 134412760), (164, 131134400), (200, 107530208), (205, 104907520), (256, 84007975), (320, 67206380), (328, 65567200), (400, 53765104), (410, 52453760), (640, 33603190), (656, 32783600), (800, 26882552), (820, 26226880), (1025, 20981504), (1280, 16801595), (1312, 16391800), (1600, 13441276), (1640, 13113440), (1681, 12793600), (1999, 10758400), (2050, 10490752), (2624, 8195900), (3200, 6720638), (3280, 6556720), (3362, 6396800), (3998, 5379200), (4100, 5245376), (5248, 4097950), (6400, 3360319), (6560, 3278360), (6724, 3198400), (7996, 2689600), (8200, 2622688), (8405, 2558720), (9995, 2151680), (10496, 2048975), (13120, 1639180), (13448, 1599200), (15992, 1344800), (16400, 1311344), (16810, 1279360), (19990, 1075840), (26240, 819590), (26896, 799600), (31984, 672400), (32800, 655672), (33620, 639680), (39980, 537920), (42025, 511744), (49975, 430336), (52480, 409795), (53792, 399800), (63968, 336200), (65600, 327836), (67240, 319840), (79960, 268960), (81959, 262400), (84050, 255872), (99950, 215168), (107584, 199900), (127936, 168100), (131200, 163918), (134480, 159920)]