1987797560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{233}}^1\times {\mathrm{30469}}^1$

素因数の和:30720

約数の個数: 64

約数和(自身を含む): 5133585600

約数和(自身を除く): 3145788040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 233, 280, 466, 932, 1165, 1631, 1864, 2330, 3262, 4660, 6524, 8155, 9320, 13048, 16310, 30469, 32620, 60938, 65240, 121876, 152345, 213283, 243752, 304690, 426566, 609380, 853132, 1066415, 1218760, 1706264, 2132830, 4265660, 7099277, 8531320, 14198554, 28397108, 35496385, 49694939, 56794216, 70992770, 99389878, 141985540, 198779756, 248474695, 283971080, 397559512, 496949390, 993898780, 1987797560]

約数ペア:

[(1, 1987797560), (2, 993898780), (4, 496949390), (5, 397559512), (7, 283971080), (8, 248474695), (10, 198779756), (14, 141985540), (20, 99389878), (28, 70992770), (35, 56794216), (40, 49694939), (56, 35496385), (70, 28397108), (140, 14198554), (233, 8531320), (280, 7099277), (466, 4265660), (932, 2132830), (1165, 1706264), (1631, 1218760), (1864, 1066415), (2330, 853132), (3262, 609380), (4660, 426566), (6524, 304690), (8155, 243752), (9320, 213283), (13048, 152345), (16310, 121876), (30469, 65240), (32620, 60938)]