19969716

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{229}}^1$

素因数の和:305

約数の個数: 72

約数和(自身を含む): 51854880

約数和(自身を除く): 31885164

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 43, 52, 78, 86, 129, 156, 169, 172, 229, 258, 338, 458, 507, 516, 559, 676, 687, 916, 1014, 1118, 1374, 1677, 2028, 2236, 2748, 2977, 3354, 5954, 6708, 7267, 8931, 9847, 11908, 14534, 17862, 19694, 21801, 29068, 29541, 35724, 38701, 39388, 43602, 59082, 77402, 87204, 116103, 118164, 128011, 154804, 232206, 256022, 384033, 464412, 512044, 768066, 1536132, 1664143, 3328286, 4992429, 6656572, 9984858, 19969716]

約数ペア:

[(1, 19969716), (2, 9984858), (3, 6656572), (4, 4992429), (6, 3328286), (12, 1664143), (13, 1536132), (26, 768066), (39, 512044), (43, 464412), (52, 384033), (78, 256022), (86, 232206), (129, 154804), (156, 128011), (169, 118164), (172, 116103), (229, 87204), (258, 77402), (338, 59082), (458, 43602), (507, 39388), (516, 38701), (559, 35724), (676, 29541), (687, 29068), (916, 21801), (1014, 19694), (1118, 17862), (1374, 14534), (1677, 11908), (2028, 9847), (2236, 8931), (2748, 7267), (2977, 6708), (3354, 5954)]