21000228116

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{241}}^1\times {\mathrm{23399}}^1$

素因数の和:23677

約数の個数: 72

約数和(自身を含む): 45189144000

約数和(自身を除く): 24188915884

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 49, 76, 98, 133, 196, 241, 266, 482, 532, 931, 964, 1687, 1862, 3374, 3724, 4579, 6748, 9158, 11809, 18316, 23399, 23618, 32053, 46798, 47236, 64106, 93596, 128212, 163793, 224371, 327586, 444581, 448742, 655172, 889162, 897484, 1146551, 1778324, 2293102, 3112067, 4586204, 5639159, 6224134, 11278318, 12448268, 21784469, 22556636, 39474113, 43568938, 78948226, 87137876, 107144021, 157896452, 214288042, 276318791, 428576084, 552637582, 750008147, 1105275164, 1500016294, 3000032588, 5250057029, 10500114058, 21000228116]

約数ペア:

[(1, 21000228116), (2, 10500114058), (4, 5250057029), (7, 3000032588), (14, 1500016294), (19, 1105275164), (28, 750008147), (38, 552637582), (49, 428576084), (76, 276318791), (98, 214288042), (133, 157896452), (196, 107144021), (241, 87137876), (266, 78948226), (482, 43568938), (532, 39474113), (931, 22556636), (964, 21784469), (1687, 12448268), (1862, 11278318), (3374, 6224134), (3724, 5639159), (4579, 4586204), (6748, 3112067), (9158, 2293102), (11809, 1778324), (18316, 1146551), (23399, 897484), (23618, 889162), (32053, 655172), (46798, 448742), (47236, 444581), (64106, 327586), (93596, 224371), (128212, 163793)]