21139936240

素因数分解:

$2^4\times 5^1\times {\mathrm{587}}^1\times {\mathrm{450169}}^1$

素因数の和:450769

約数の個数: 40

約数和(自身を含む): 49234192560

約数和(自身を除く): 28094256320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 587, 1174, 2348, 2935, 4696, 5870, 9392, 11740, 23480, 46960, 450169, 900338, 1800676, 2250845, 3601352, 4501690, 7202704, 9003380, 18006760, 36013520, 264249203, 528498406, 1056996812, 1321246015, 2113993624, 2642492030, 4227987248, 5284984060, 10569968120, 21139936240]

約数ペア:

[(1, 21139936240), (2, 10569968120), (4, 5284984060), (5, 4227987248), (8, 2642492030), (10, 2113993624), (16, 1321246015), (20, 1056996812), (40, 528498406), (80, 264249203), (587, 36013520), (1174, 18006760), (2348, 9003380), (2935, 7202704), (4696, 4501690), (5870, 3601352), (9392, 2250845), (11740, 1800676), (23480, 900338), (46960, 450169)]