18359440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{673}}^1$

素因数の和:728

約数の個数: 80

約数和(自身を含む): 48139776

約数和(自身を除く): 29780336

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 40, 44, 55, 62, 80, 88, 110, 124, 155, 176, 220, 248, 310, 341, 440, 496, 620, 673, 682, 880, 1240, 1346, 1364, 1705, 2480, 2692, 2728, 3365, 3410, 5384, 5456, 6730, 6820, 7403, 10768, 13460, 13640, 14806, 20863, 26920, 27280, 29612, 37015, 41726, 53840, 59224, 74030, 83452, 104315, 118448, 148060, 166904, 208630, 229493, 296120, 333808, 417260, 458986, 592240, 834520, 917972, 1147465, 1669040, 1835944, 2294930, 3671888, 4589860, 9179720, 18359440]

約数ペア:

[(1, 18359440), (2, 9179720), (4, 4589860), (5, 3671888), (8, 2294930), (10, 1835944), (11, 1669040), (16, 1147465), (20, 917972), (22, 834520), (31, 592240), (40, 458986), (44, 417260), (55, 333808), (62, 296120), (80, 229493), (88, 208630), (110, 166904), (124, 148060), (155, 118448), (176, 104315), (220, 83452), (248, 74030), (310, 59224), (341, 53840), (440, 41726), (496, 37015), (620, 29612), (673, 27280), (682, 26920), (880, 20863), (1240, 14806), (1346, 13640), (1364, 13460), (1705, 10768), (2480, 7403), (2692, 6820), (2728, 6730), (3365, 5456), (3410, 5384)]