18771440

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{97}}^1$

素因数の和:210

約数の個数: 80

約数和(自身を含む): 45934560

約数和(自身を除く): 27163120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 59, 80, 82, 97, 118, 164, 194, 205, 236, 295, 328, 388, 410, 472, 485, 590, 656, 776, 820, 944, 970, 1180, 1552, 1640, 1940, 2360, 2419, 3280, 3880, 3977, 4720, 4838, 5723, 7760, 7954, 9676, 11446, 12095, 15908, 19352, 19885, 22892, 24190, 28615, 31816, 38704, 39770, 45784, 48380, 57230, 63632, 79540, 91568, 96760, 114460, 159080, 193520, 228920, 234643, 318160, 457840, 469286, 938572, 1173215, 1877144, 2346430, 3754288, 4692860, 9385720, 18771440]

約数ペア:

[(1, 18771440), (2, 9385720), (4, 4692860), (5, 3754288), (8, 2346430), (10, 1877144), (16, 1173215), (20, 938572), (40, 469286), (41, 457840), (59, 318160), (80, 234643), (82, 228920), (97, 193520), (118, 159080), (164, 114460), (194, 96760), (205, 91568), (236, 79540), (295, 63632), (328, 57230), (388, 48380), (410, 45784), (472, 39770), (485, 38704), (590, 31816), (656, 28615), (776, 24190), (820, 22892), (944, 19885), (970, 19352), (1180, 15908), (1552, 12095), (1640, 11446), (1940, 9676), (2360, 7954), (2419, 7760), (3280, 5723), (3880, 4838), (3977, 4720)]