1818388540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{919}}^1$

素因数の和:1115

約数の個数: 96

約数和(自身を含む): 4154572800

約数和(自身を除く): 2336184260

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 95, 127, 164, 190, 205, 254, 380, 410, 508, 635, 779, 820, 919, 1270, 1558, 1838, 2413, 2540, 3116, 3676, 3895, 4595, 4826, 5207, 7790, 9190, 9652, 10414, 12065, 15580, 17461, 18380, 20828, 24130, 26035, 34922, 37679, 48260, 52070, 69844, 75358, 87305, 98933, 104140, 116713, 150716, 174610, 188395, 197866, 233426, 349220, 376790, 395732, 466852, 494665, 583565, 715901, 753580, 989330, 1167130, 1431802, 1978660, 2217547, 2334260, 2863604, 3579505, 4435094, 4785233, 7159010, 8870188, 9570466, 11087735, 14318020, 19140932, 22175470, 23926165, 44350940, 47852330, 90919427, 95704660, 181838854, 363677708, 454597135, 909194270, 1818388540]

約数ペア:

[(1, 1818388540), (2, 909194270), (4, 454597135), (5, 363677708), (10, 181838854), (19, 95704660), (20, 90919427), (38, 47852330), (41, 44350940), (76, 23926165), (82, 22175470), (95, 19140932), (127, 14318020), (164, 11087735), (190, 9570466), (205, 8870188), (254, 7159010), (380, 4785233), (410, 4435094), (508, 3579505), (635, 2863604), (779, 2334260), (820, 2217547), (919, 1978660), (1270, 1431802), (1558, 1167130), (1838, 989330), (2413, 753580), (2540, 715901), (3116, 583565), (3676, 494665), (3895, 466852), (4595, 395732), (4826, 376790), (5207, 349220), (7790, 233426), (9190, 197866), (9652, 188395), (10414, 174610), (12065, 150716), (15580, 116713), (17461, 104140), (18380, 98933), (20828, 87305), (24130, 75358), (26035, 69844), (34922, 52070), (37679, 48260)]