638522640

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{126691}}^1$

素因数の和:126717

約数の個数: 120

約数和(自身を含む): 2450730048

約数和(自身を除く): 1812207408

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 5040, 126691, 253382, 380073, 506764, 633455, 760146, 886837, 1013528, 1140219, 1266910, 1520292, 1773674, 1900365, 2027056, 2280438, 2533820, 2660511, 3040584, 3547348, 3800730, 4434185, 4560876, 5067640, 5321022, 5701095, 6081168, 7094696, 7601460, 7981533, 8868370, 9121752, 10135280, 10642044, 11402190, 13302555, 14189392, 15202920, 15963066, 17736740, 18243504, 21284088, 22804380, 26605110, 30405840, 31926132, 35473480, 39907665, 42568176, 45608760, 53210220, 63852264, 70946960, 79815330, 91217520, 106420440, 127704528, 159630660, 212840880, 319261320, 638522640]

約数ペア:

[(1, 638522640), (2, 319261320), (3, 212840880), (4, 159630660), (5, 127704528), (6, 106420440), (7, 91217520), (8, 79815330), (9, 70946960), (10, 63852264), (12, 53210220), (14, 45608760), (15, 42568176), (16, 39907665), (18, 35473480), (20, 31926132), (21, 30405840), (24, 26605110), (28, 22804380), (30, 21284088), (35, 18243504), (36, 17736740), (40, 15963066), (42, 15202920), (45, 14189392), (48, 13302555), (56, 11402190), (60, 10642044), (63, 10135280), (70, 9121752), (72, 8868370), (80, 7981533), (84, 7601460), (90, 7094696), (105, 6081168), (112, 5701095), (120, 5321022), (126, 5067640), (140, 4560876), (144, 4434185), (168, 3800730), (180, 3547348), (210, 3040584), (240, 2660511), (252, 2533820), (280, 2280438), (315, 2027056), (336, 1900365), (360, 1773674), (420, 1520292), (504, 1266910), (560, 1140219), (630, 1013528), (720, 886837), (840, 760146), (1008, 633455), (1260, 506764), (1680, 380073), (2520, 253382), (5040, 126691)]