81175920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{229}}^1$

素因数の和:463

約数の個数: 160

約数和(自身を含む): 290219520

約数和(自身を除く): 209043600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 211, 229, 240, 280, 336, 420, 422, 458, 560, 633, 687, 840, 844, 916, 1055, 1145, 1266, 1374, 1477, 1603, 1680, 1688, 1832, 2110, 2290, 2532, 2748, 2954, 3165, 3206, 3376, 3435, 3664, 4220, 4431, 4580, 4809, 5064, 5496, 5908, 6330, 6412, 6870, 7385, 8015, 8440, 8862, 9160, 9618, 10128, 10992, 11816, 12660, 12824, 13740, 14770, 16030, 16880, 17724, 18320, 19236, 22155, 23632, 24045, 25320, 25648, 27480, 29540, 32060, 35448, 38472, 44310, 48090, 48319, 50640, 54960, 59080, 64120, 70896, 76944, 88620, 96180, 96638, 118160, 128240, 144957, 177240, 192360, 193276, 241595, 289914, 338233, 354480, 384720, 386552, 483190, 579828, 676466, 724785, 773104, 966380, 1014699, 1159656, 1352932, 1449570, 1691165, 1932760, 2029398, 2319312, 2705864, 2899140, 3382330, 3865520, 4058796, 5073495, 5411728, 5798280, 6764660, 8117592, 10146990, 11596560, 13529320, 16235184, 20293980, 27058640, 40587960, 81175920]

約数ペア:

[(1, 81175920), (2, 40587960), (3, 27058640), (4, 20293980), (5, 16235184), (6, 13529320), (7, 11596560), (8, 10146990), (10, 8117592), (12, 6764660), (14, 5798280), (15, 5411728), (16, 5073495), (20, 4058796), (21, 3865520), (24, 3382330), (28, 2899140), (30, 2705864), (35, 2319312), (40, 2029398), (42, 1932760), (48, 1691165), (56, 1449570), (60, 1352932), (70, 1159656), (80, 1014699), (84, 966380), (105, 773104), (112, 724785), (120, 676466), (140, 579828), (168, 483190), (210, 386552), (211, 384720), (229, 354480), (240, 338233), (280, 289914), (336, 241595), (420, 193276), (422, 192360), (458, 177240), (560, 144957), (633, 128240), (687, 118160), (840, 96638), (844, 96180), (916, 88620), (1055, 76944), (1145, 70896), (1266, 64120), (1374, 59080), (1477, 54960), (1603, 50640), (1680, 48319), (1688, 48090), (1832, 44310), (2110, 38472), (2290, 35448), (2532, 32060), (2748, 29540), (2954, 27480), (3165, 25648), (3206, 25320), (3376, 24045), (3435, 23632), (3664, 22155), (4220, 19236), (4431, 18320), (4580, 17724), (4809, 16880), (5064, 16030), (5496, 14770), (5908, 13740), (6330, 12824), (6412, 12660), (6870, 11816), (7385, 10992), (8015, 10128), (8440, 9618), (8862, 9160)]