7821380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{347}}^1$

素因数の和:393

約数の個数: 72

約数和(自身を含む): 19994688

約数和(自身を除く): 12173308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 49, 70, 92, 98, 115, 140, 161, 196, 230, 245, 322, 347, 460, 490, 644, 694, 805, 980, 1127, 1388, 1610, 1735, 2254, 2429, 3220, 3470, 4508, 4858, 5635, 6940, 7981, 9716, 11270, 12145, 15962, 17003, 22540, 24290, 31924, 34006, 39905, 48580, 55867, 68012, 79810, 85015, 111734, 159620, 170030, 223468, 279335, 340060, 391069, 558670, 782138, 1117340, 1564276, 1955345, 3910690, 7821380]

約数ペア:

[(1, 7821380), (2, 3910690), (4, 1955345), (5, 1564276), (7, 1117340), (10, 782138), (14, 558670), (20, 391069), (23, 340060), (28, 279335), (35, 223468), (46, 170030), (49, 159620), (70, 111734), (92, 85015), (98, 79810), (115, 68012), (140, 55867), (161, 48580), (196, 39905), (230, 34006), (245, 31924), (322, 24290), (347, 22540), (460, 17003), (490, 15962), (644, 12145), (694, 11270), (805, 9716), (980, 7981), (1127, 6940), (1388, 5635), (1610, 4858), (1735, 4508), (2254, 3470), (2429, 3220)]