30791320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{397}}^1$

素因数の和:692

約数の個数: 64

約数和(自身を含む): 79663680

約数和(自身を除く): 48872360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 277, 280, 397, 554, 794, 1108, 1385, 1588, 1939, 1985, 2216, 2770, 2779, 3176, 3878, 3970, 5540, 5558, 7756, 7940, 9695, 11080, 11116, 13895, 15512, 15880, 19390, 22232, 27790, 38780, 55580, 77560, 109969, 111160, 219938, 439876, 549845, 769783, 879752, 1099690, 1539566, 2199380, 3079132, 3848915, 4398760, 6158264, 7697830, 15395660, 30791320]

約数ペア:

[(1, 30791320), (2, 15395660), (4, 7697830), (5, 6158264), (7, 4398760), (8, 3848915), (10, 3079132), (14, 2199380), (20, 1539566), (28, 1099690), (35, 879752), (40, 769783), (56, 549845), (70, 439876), (140, 219938), (277, 111160), (280, 109969), (397, 77560), (554, 55580), (794, 38780), (1108, 27790), (1385, 22232), (1588, 19390), (1939, 15880), (1985, 15512), (2216, 13895), (2770, 11116), (2779, 11080), (3176, 9695), (3878, 7940), (3970, 7756), (5540, 5558)]