689015320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{1231}}^1\times {\mathrm{1999}}^1$

素因数の和:3248

約数の個数: 64

約数和(自身を含む): 1774080000

約数和(自身を除く): 1085064680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 1231, 1999, 2462, 3998, 4924, 6155, 7996, 8617, 9848, 9995, 12310, 13993, 15992, 17234, 19990, 24620, 27986, 34468, 39980, 43085, 49240, 55972, 68936, 69965, 79960, 86170, 111944, 139930, 172340, 279860, 344680, 559720, 2460769, 4921538, 9843076, 12303845, 17225383, 19686152, 24607690, 34450766, 49215380, 68901532, 86126915, 98430760, 137803064, 172253830, 344507660, 689015320]

約数ペア:

[(1, 689015320), (2, 344507660), (4, 172253830), (5, 137803064), (7, 98430760), (8, 86126915), (10, 68901532), (14, 49215380), (20, 34450766), (28, 24607690), (35, 19686152), (40, 17225383), (56, 12303845), (70, 9843076), (140, 4921538), (280, 2460769), (1231, 559720), (1999, 344680), (2462, 279860), (3998, 172340), (4924, 139930), (6155, 111944), (7996, 86170), (8617, 79960), (9848, 69965), (9995, 68936), (12310, 55972), (13993, 49240), (15992, 43085), (17234, 39980), (19990, 34468), (24620, 27986)]