20797980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{2153}}^1$

素因数の和:2195

約数の個数: 96

約数和(自身を含む): 69479424

約数和(自身を除く): 48681444

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 23, 28, 30, 35, 42, 46, 60, 69, 70, 84, 92, 105, 115, 138, 140, 161, 210, 230, 276, 322, 345, 420, 460, 483, 644, 690, 805, 966, 1380, 1610, 1932, 2153, 2415, 3220, 4306, 4830, 6459, 8612, 9660, 10765, 12918, 15071, 21530, 25836, 30142, 32295, 43060, 45213, 49519, 60284, 64590, 75355, 90426, 99038, 129180, 148557, 150710, 180852, 198076, 226065, 247595, 297114, 301420, 346633, 452130, 495190, 594228, 693266, 742785, 904260, 990380, 1039899, 1386532, 1485570, 1733165, 2079798, 2971140, 3466330, 4159596, 5199495, 6932660, 10398990, 20797980]

約数ペア:

[(1, 20797980), (2, 10398990), (3, 6932660), (4, 5199495), (5, 4159596), (6, 3466330), (7, 2971140), (10, 2079798), (12, 1733165), (14, 1485570), (15, 1386532), (20, 1039899), (21, 990380), (23, 904260), (28, 742785), (30, 693266), (35, 594228), (42, 495190), (46, 452130), (60, 346633), (69, 301420), (70, 297114), (84, 247595), (92, 226065), (105, 198076), (115, 180852), (138, 150710), (140, 148557), (161, 129180), (210, 99038), (230, 90426), (276, 75355), (322, 64590), (345, 60284), (420, 49519), (460, 45213), (483, 43060), (644, 32295), (690, 30142), (805, 25836), (966, 21530), (1380, 15071), (1610, 12918), (1932, 10765), (2153, 9660), (2415, 8612), (3220, 6459), (4306, 4830)]