898845990

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{21727}}^1$

素因数の和:21941

約数の個数: 64

約数和(自身を含む): 2478034944

約数和(自身を除く): 1579188954

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 197, 210, 394, 591, 985, 1182, 1379, 1970, 2758, 2955, 4137, 5910, 6895, 8274, 13790, 20685, 21727, 41370, 43454, 65181, 108635, 130362, 152089, 217270, 304178, 325905, 456267, 651810, 760445, 912534, 1520890, 2281335, 4280219, 4562670, 8560438, 12840657, 21401095, 25681314, 29961533, 42802190, 59923066, 64203285, 89884599, 128406570, 149807665, 179769198, 299615330, 449422995, 898845990]

約数ペア:

[(1, 898845990), (2, 449422995), (3, 299615330), (5, 179769198), (6, 149807665), (7, 128406570), (10, 89884599), (14, 64203285), (15, 59923066), (21, 42802190), (30, 29961533), (35, 25681314), (42, 21401095), (70, 12840657), (105, 8560438), (197, 4562670), (210, 4280219), (394, 2281335), (591, 1520890), (985, 912534), (1182, 760445), (1379, 651810), (1970, 456267), (2758, 325905), (2955, 304178), (4137, 217270), (5910, 152089), (6895, 130362), (8274, 108635), (13790, 65181), (20685, 43454), (21727, 41370)]