614400340

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{1979}}^1$

素因数の和:2069

約数の個数: 72

約数和(自身を含む): 1394094240

約数和(自身を除く): 779693900

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 76, 86, 95, 172, 190, 215, 361, 380, 430, 722, 817, 860, 1444, 1634, 1805, 1979, 3268, 3610, 3958, 4085, 7220, 7916, 8170, 9895, 15523, 16340, 19790, 31046, 37601, 39580, 62092, 75202, 77615, 85097, 150404, 155230, 170194, 188005, 310460, 340388, 376010, 425485, 714419, 752020, 850970, 1428838, 1616843, 1701940, 2857676, 3233686, 3572095, 6467372, 7144190, 8084215, 14288380, 16168430, 30720017, 32336860, 61440034, 122880068, 153600085, 307200170, 614400340]

約数ペア:

[(1, 614400340), (2, 307200170), (4, 153600085), (5, 122880068), (10, 61440034), (19, 32336860), (20, 30720017), (38, 16168430), (43, 14288380), (76, 8084215), (86, 7144190), (95, 6467372), (172, 3572095), (190, 3233686), (215, 2857676), (361, 1701940), (380, 1616843), (430, 1428838), (722, 850970), (817, 752020), (860, 714419), (1444, 425485), (1634, 376010), (1805, 340388), (1979, 310460), (3268, 188005), (3610, 170194), (3958, 155230), (4085, 150404), (7220, 85097), (7916, 77615), (8170, 75202), (9895, 62092), (15523, 39580), (16340, 37601), (19790, 31046)]