20303972

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 40174512

約数和(自身を除く): 19870540

約数列:

[1, 2, 4, 13, 26, 37, 52, 61, 74, 122, 148, 173, 244, 346, 481, 692, 793, 962, 1586, 1924, 2249, 2257, 3172, 4498, 4514, 6401, 8996, 9028, 10553, 12802, 21106, 25604, 29341, 42212, 58682, 83213, 117364, 137189, 166426, 274378, 332852, 390461, 548756, 780922, 1561844, 5075993, 10151986, 20303972]

約数ペア:

[(1, 20303972), (2, 10151986), (4, 5075993), (13, 1561844), (26, 780922), (37, 548756), (52, 390461), (61, 332852), (74, 274378), (122, 166426), (148, 137189), (173, 117364), (244, 83213), (346, 58682), (481, 42212), (692, 29341), (793, 25604), (962, 21106), (1586, 12802), (1924, 10553), (2249, 9028), (2257, 8996), (3172, 6401), (4498, 4514)]