19641720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{349}}^1$

素因数の和:437

約数の個数: 128

約数和(自身を含む): 68544000

約数和(自身を除く): 48902280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 67, 70, 84, 105, 120, 134, 140, 168, 201, 210, 268, 280, 335, 349, 402, 420, 469, 536, 670, 698, 804, 840, 938, 1005, 1047, 1340, 1396, 1407, 1608, 1745, 1876, 2010, 2094, 2345, 2443, 2680, 2792, 2814, 3490, 3752, 4020, 4188, 4690, 4886, 5235, 5628, 6980, 7035, 7329, 8040, 8376, 9380, 9772, 10470, 11256, 12215, 13960, 14070, 14658, 18760, 19544, 20940, 23383, 24430, 28140, 29316, 36645, 41880, 46766, 48860, 56280, 58632, 70149, 73290, 93532, 97720, 116915, 140298, 146580, 163681, 187064, 233830, 280596, 293160, 327362, 350745, 467660, 491043, 561192, 654724, 701490, 818405, 935320, 982086, 1309448, 1402980, 1636810, 1964172, 2455215, 2805960, 3273620, 3928344, 4910430, 6547240, 9820860, 19641720]

約数ペア:

[(1, 19641720), (2, 9820860), (3, 6547240), (4, 4910430), (5, 3928344), (6, 3273620), (7, 2805960), (8, 2455215), (10, 1964172), (12, 1636810), (14, 1402980), (15, 1309448), (20, 982086), (21, 935320), (24, 818405), (28, 701490), (30, 654724), (35, 561192), (40, 491043), (42, 467660), (56, 350745), (60, 327362), (67, 293160), (70, 280596), (84, 233830), (105, 187064), (120, 163681), (134, 146580), (140, 140298), (168, 116915), (201, 97720), (210, 93532), (268, 73290), (280, 70149), (335, 58632), (349, 56280), (402, 48860), (420, 46766), (469, 41880), (536, 36645), (670, 29316), (698, 28140), (804, 24430), (840, 23383), (938, 20940), (1005, 19544), (1047, 18760), (1340, 14658), (1396, 14070), (1407, 13960), (1608, 12215), (1745, 11256), (1876, 10470), (2010, 9772), (2094, 9380), (2345, 8376), (2443, 8040), (2680, 7329), (2792, 7035), (2814, 6980), (3490, 5628), (3752, 5235), (4020, 4886), (4188, 4690)]