20121200

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{269}}^1$

素因数の和:315

約数の個数: 120

約数和(自身を含む): 56045520

約数和(自身を除く): 35924320

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 25, 34, 40, 44, 50, 55, 68, 80, 85, 88, 100, 110, 136, 170, 176, 187, 200, 220, 269, 272, 275, 340, 374, 400, 425, 440, 538, 550, 680, 748, 850, 880, 935, 1076, 1100, 1345, 1360, 1496, 1700, 1870, 2152, 2200, 2690, 2959, 2992, 3400, 3740, 4304, 4400, 4573, 4675, 5380, 5918, 6725, 6800, 7480, 9146, 9350, 10760, 11836, 13450, 14795, 14960, 18292, 18700, 21520, 22865, 23672, 26900, 29590, 36584, 37400, 45730, 47344, 50303, 53800, 59180, 73168, 73975, 74800, 91460, 100606, 107600, 114325, 118360, 147950, 182920, 201212, 228650, 236720, 251515, 295900, 365840, 402424, 457300, 503030, 591800, 804848, 914600, 1006060, 1183600, 1257575, 1829200, 2012120, 2515150, 4024240, 5030300, 10060600, 20121200]

約数ペア:

[(1, 20121200), (2, 10060600), (4, 5030300), (5, 4024240), (8, 2515150), (10, 2012120), (11, 1829200), (16, 1257575), (17, 1183600), (20, 1006060), (22, 914600), (25, 804848), (34, 591800), (40, 503030), (44, 457300), (50, 402424), (55, 365840), (68, 295900), (80, 251515), (85, 236720), (88, 228650), (100, 201212), (110, 182920), (136, 147950), (170, 118360), (176, 114325), (187, 107600), (200, 100606), (220, 91460), (269, 74800), (272, 73975), (275, 73168), (340, 59180), (374, 53800), (400, 50303), (425, 47344), (440, 45730), (538, 37400), (550, 36584), (680, 29590), (748, 26900), (850, 23672), (880, 22865), (935, 21520), (1076, 18700), (1100, 18292), (1345, 14960), (1360, 14795), (1496, 13450), (1700, 11836), (1870, 10760), (2152, 9350), (2200, 9146), (2690, 7480), (2959, 6800), (2992, 6725), (3400, 5918), (3740, 5380), (4304, 4675), (4400, 4573)]