21307132

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{331}}^1$

素因数の和:383

約数の個数: 72

約数和(自身を含む): 49454720

約数和(自身を除く): 28147588

約数列:

[1, 2, 4, 7, 11, 14, 19, 22, 28, 38, 44, 76, 77, 121, 133, 154, 209, 242, 266, 308, 331, 418, 484, 532, 662, 836, 847, 1324, 1463, 1694, 2299, 2317, 2926, 3388, 3641, 4598, 4634, 5852, 6289, 7282, 9196, 9268, 12578, 14564, 16093, 25156, 25487, 32186, 40051, 44023, 50974, 64372, 69179, 80102, 88046, 101948, 138358, 160204, 176092, 276716, 280357, 484253, 560714, 760969, 968506, 1121428, 1521938, 1937012, 3043876, 5326783, 10653566, 21307132]

約数ペア:

[(1, 21307132), (2, 10653566), (4, 5326783), (7, 3043876), (11, 1937012), (14, 1521938), (19, 1121428), (22, 968506), (28, 760969), (38, 560714), (44, 484253), (76, 280357), (77, 276716), (121, 176092), (133, 160204), (154, 138358), (209, 101948), (242, 88046), (266, 80102), (308, 69179), (331, 64372), (418, 50974), (484, 44023), (532, 40051), (662, 32186), (836, 25487), (847, 25156), (1324, 16093), (1463, 14564), (1694, 12578), (2299, 9268), (2317, 9196), (2926, 7282), (3388, 6289), (3641, 5852), (4598, 4634)]