18918972

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{313}}^1$

素因数の和:419

約数の個数: 72

約数和(自身を含む): 50747424

約数和(自身を除く): 31828452

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 69, 73, 92, 138, 146, 207, 219, 276, 292, 313, 414, 438, 626, 657, 828, 876, 939, 1252, 1314, 1679, 1878, 2628, 2817, 3358, 3756, 5037, 5634, 6716, 7199, 10074, 11268, 14398, 15111, 20148, 21597, 22849, 28796, 30222, 43194, 45698, 60444, 64791, 68547, 86388, 91396, 129582, 137094, 205641, 259164, 274188, 411282, 525527, 822564, 1051054, 1576581, 2102108, 3153162, 4729743, 6306324, 9459486, 18918972]

約数ペア:

[(1, 18918972), (2, 9459486), (3, 6306324), (4, 4729743), (6, 3153162), (9, 2102108), (12, 1576581), (18, 1051054), (23, 822564), (36, 525527), (46, 411282), (69, 274188), (73, 259164), (92, 205641), (138, 137094), (146, 129582), (207, 91396), (219, 86388), (276, 68547), (292, 64791), (313, 60444), (414, 45698), (438, 43194), (626, 30222), (657, 28796), (828, 22849), (876, 21597), (939, 20148), (1252, 15111), (1314, 14398), (1679, 11268), (1878, 10074), (2628, 7199), (2817, 6716), (3358, 5634), (3756, 5037)]