21860244

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{389}}^1$

素因数の和:629

約数の個数: 72

約数和(自身を含む): 63598080

約数和(自身を除く): 41737836

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 223, 252, 389, 446, 669, 778, 892, 1167, 1338, 1556, 1561, 2007, 2334, 2676, 2723, 3122, 3501, 4014, 4668, 4683, 5446, 6244, 7002, 8028, 8169, 9366, 10892, 14004, 14049, 16338, 18732, 24507, 28098, 32676, 49014, 56196, 86747, 98028, 173494, 260241, 346988, 520482, 607229, 780723, 1040964, 1214458, 1561446, 1821687, 2428916, 3122892, 3643374, 5465061, 7286748, 10930122, 21860244]

約数ペア:

[(1, 21860244), (2, 10930122), (3, 7286748), (4, 5465061), (6, 3643374), (7, 3122892), (9, 2428916), (12, 1821687), (14, 1561446), (18, 1214458), (21, 1040964), (28, 780723), (36, 607229), (42, 520482), (63, 346988), (84, 260241), (126, 173494), (223, 98028), (252, 86747), (389, 56196), (446, 49014), (669, 32676), (778, 28098), (892, 24507), (1167, 18732), (1338, 16338), (1556, 14049), (1561, 14004), (2007, 10892), (2334, 9366), (2676, 8169), (2723, 8028), (3122, 7002), (3501, 6244), (4014, 5446), (4668, 4683)]