21439908

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{571}}^1$

素因数の和:737

約数の個数: 72

約数和(自身を含む): 62462400

約数和(自身を除く): 41022492

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 149, 252, 298, 447, 571, 596, 894, 1043, 1142, 1341, 1713, 1788, 2086, 2284, 2682, 3129, 3426, 3997, 4172, 5139, 5364, 6258, 6852, 7994, 9387, 10278, 11991, 12516, 15988, 18774, 20556, 23982, 35973, 37548, 47964, 71946, 85079, 143892, 170158, 255237, 340316, 510474, 595553, 765711, 1020948, 1191106, 1531422, 1786659, 2382212, 3062844, 3573318, 5359977, 7146636, 10719954, 21439908]

約数ペア:

[(1, 21439908), (2, 10719954), (3, 7146636), (4, 5359977), (6, 3573318), (7, 3062844), (9, 2382212), (12, 1786659), (14, 1531422), (18, 1191106), (21, 1020948), (28, 765711), (36, 595553), (42, 510474), (63, 340316), (84, 255237), (126, 170158), (149, 143892), (252, 85079), (298, 71946), (447, 47964), (571, 37548), (596, 35973), (894, 23982), (1043, 20556), (1142, 18774), (1341, 15988), (1713, 12516), (1788, 11991), (2086, 10278), (2284, 9387), (2682, 7994), (3129, 6852), (3426, 6258), (3997, 5364), (4172, 5139)]