21239350

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{73}}^1$

素因数の和:142

約数の個数: 72

約数和(自身を含む): 45668952

約数和(自身を除く): 24429602

約数列:

[1, 2, 5, 10, 11, 22, 23, 25, 46, 50, 55, 73, 110, 115, 146, 230, 253, 275, 365, 506, 529, 550, 575, 730, 803, 1058, 1150, 1265, 1606, 1679, 1825, 2530, 2645, 3358, 3650, 4015, 5290, 5819, 6325, 8030, 8395, 11638, 12650, 13225, 16790, 18469, 20075, 26450, 29095, 36938, 38617, 40150, 41975, 58190, 77234, 83950, 92345, 145475, 184690, 193085, 290950, 386170, 424787, 461725, 849574, 923450, 965425, 1930850, 2123935, 4247870, 10619675, 21239350]

約数ペア:

[(1, 21239350), (2, 10619675), (5, 4247870), (10, 2123935), (11, 1930850), (22, 965425), (23, 923450), (25, 849574), (46, 461725), (50, 424787), (55, 386170), (73, 290950), (110, 193085), (115, 184690), (146, 145475), (230, 92345), (253, 83950), (275, 77234), (365, 58190), (506, 41975), (529, 40150), (550, 38617), (575, 36938), (730, 29095), (803, 26450), (1058, 20075), (1150, 18469), (1265, 16790), (1606, 13225), (1679, 12650), (1825, 11638), (2530, 8395), (2645, 8030), (3358, 6325), (3650, 5819), (4015, 5290)]