21478086

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{373}}^1\times {\mathrm{457}}^1$

素因数の和:845

約数の個数: 48

約数和(自身を含む): 53443104

約数和(自身を除く): 31965018

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 373, 457, 746, 914, 1119, 1371, 2238, 2611, 2742, 3199, 3357, 4113, 5222, 6398, 6714, 7833, 8226, 9597, 15666, 19194, 23499, 28791, 46998, 57582, 170461, 340922, 511383, 1022766, 1193227, 1534149, 2386454, 3068298, 3579681, 7159362, 10739043, 21478086]

約数ペア:

[(1, 21478086), (2, 10739043), (3, 7159362), (6, 3579681), (7, 3068298), (9, 2386454), (14, 1534149), (18, 1193227), (21, 1022766), (42, 511383), (63, 340922), (126, 170461), (373, 57582), (457, 46998), (746, 28791), (914, 23499), (1119, 19194), (1371, 15666), (2238, 9597), (2611, 8226), (2742, 7833), (3199, 6714), (3357, 6398), (4113, 5222)]