87981720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{353}}^1$

素因数の和:465

約数の個数: 128

約数和(自身を含む): 277309440

約数和(自身を除く): 189327720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 67, 93, 120, 124, 134, 155, 186, 201, 248, 268, 310, 335, 353, 372, 402, 465, 536, 620, 670, 706, 744, 804, 930, 1005, 1059, 1240, 1340, 1412, 1608, 1765, 1860, 2010, 2077, 2118, 2680, 2824, 3530, 3720, 4020, 4154, 4236, 5295, 6231, 7060, 8040, 8308, 8472, 10385, 10590, 10943, 12462, 14120, 16616, 20770, 21180, 21886, 23651, 24924, 31155, 32829, 41540, 42360, 43772, 47302, 49848, 54715, 62310, 65658, 70953, 83080, 87544, 94604, 109430, 118255, 124620, 131316, 141906, 164145, 189208, 218860, 236510, 249240, 262632, 283812, 328290, 354765, 437720, 473020, 567624, 656580, 709530, 733181, 946040, 1313160, 1419060, 1466362, 2199543, 2838120, 2932724, 3665905, 4399086, 5865448, 7331810, 8798172, 10997715, 14663620, 17596344, 21995430, 29327240, 43990860, 87981720]

約数ペア:

[(1, 87981720), (2, 43990860), (3, 29327240), (4, 21995430), (5, 17596344), (6, 14663620), (8, 10997715), (10, 8798172), (12, 7331810), (15, 5865448), (20, 4399086), (24, 3665905), (30, 2932724), (31, 2838120), (40, 2199543), (60, 1466362), (62, 1419060), (67, 1313160), (93, 946040), (120, 733181), (124, 709530), (134, 656580), (155, 567624), (186, 473020), (201, 437720), (248, 354765), (268, 328290), (310, 283812), (335, 262632), (353, 249240), (372, 236510), (402, 218860), (465, 189208), (536, 164145), (620, 141906), (670, 131316), (706, 124620), (744, 118255), (804, 109430), (930, 94604), (1005, 87544), (1059, 83080), (1240, 70953), (1340, 65658), (1412, 62310), (1608, 54715), (1765, 49848), (1860, 47302), (2010, 43772), (2077, 42360), (2118, 41540), (2680, 32829), (2824, 31155), (3530, 24924), (3720, 23651), (4020, 21886), (4154, 21180), (4236, 20770), (5295, 16616), (6231, 14120), (7060, 12462), (8040, 10943), (8308, 10590), (8472, 10385)]